Can you eat biscuits at passover? Is baking powder ok?

I can only speak for Ahkanazi Jewish tradition, not for Sephardic, but according to the "official" rules the issue with biscuits is not the baking soda, it is the flour. Flour is considered to have leavened if it spends more than a cumulative 18 minutes wet from the time of harvest until it is baked. That said, many Jewish people would probably balk at the idea of eating biscuits on passover unless they are made with matzah meal instead of flour, even if they follow the 18 minutes rule. For me it would feel like violating the spirit of the holiday even if it does not violate the law explicitly.

I can eat whatever I want during passover. In fact I am going to have some pancakes.
- It is possible to make kosher for pesach pancakes with potato starch instead of flour, FYI.
  I can eat whatever I want though, too, during passover, gonna have a nice bread sandwich :)

Well that depends on which religion you follow and how strictly you follow it. Might want to be a bit more specific
- Also depends on your variant of English, because North American Biscuits are very different from the rest of the anglophone world's biscuits. Many of them are unleavened, just as most gods don't have a strong position on whether you should use leavening at any time of the year, let alone now.

Crescent biscuits are a traditional pesach biscuit for some Ashkenazi Jews (not that I am one, lol) made with potato starch (can't use corn starch, it's Kitniyos) and matza meal (basically powdered matza) and other biscuit ingredients such as sugar and eggs. Those who don't eat matza with water ('gebrok') can't have them though.
And yes, there are also pesach cakes, known as plavas. And yes, they involve a lot of separating eggs.

It's the flour, generally. Although rice is now fine. I mean rice has been fine for a few years. It really depends on sect and how observant you are.
I don't keep kosher nor kosher for passover. I'll make sure food I prepare for mother for seder is good, but once I get home I'm eating a very normal pizza and pasta cause they're cheap.
Also kosher for passover cakes are horrific, just make a flourless torte. Or something. Charoset is delicious as a dessert.

The comments from the enlightened athiests are killing me, lmao.
OP, from my understanding of Jewish religion, whether your dogma permisses the consumption of biscuits or not can be found by observing your stance on Zionism.
If you're Zionist, you're already rebelling against Yahweh's decree of Three Oath's by either outright denial or by thinking you can outsmart Yahweh through some perceived technicality or loophole. If that's the case, by all means, eat all the biscuits you desire; you'll eventually find someway to convince yourself that you didn't actually violate the decrees during Passover anyways.
Now, if you're not a Zionist, then you are actually following Yahweh and give proper respect and credence into the very spirit of Yahweh's decrees. In that case, no, do not eat any biscuits. Just like Lent and Ramadan, Passover will eventually. . . pass over, and you will live to eat your beloved biscuits another day.
- Could you break down the groups you're talking about? What is zionism and what makes it problematic?
  
  I'm always happy to help educate a fellow goy!
  What is Zionism?
  In short, Zionism is just Nazism but replace Aryan with Jew.
  The more fleshed out answer is that Zionism is an ideology with its basis being Jewish racial supremacy. Just like with Nazi ideology and the Aryans, Zionist ideology believes in both the right and the entitlement to an ethnostate of a "special" or "chosen" people no matter the means, even if it comes at the deprivation of rights and injustice of other people.
  Why is this problematic?
  The problem is two-fold and can be found by observing history. During the founding of the current iteration of the Zionist project, known as Israel, the Jewish racial supremacists would rape, murder, and rob the indigenous people initially living on the land where the supremacists wanted to establish their ethnostate. Currently, Zionists will glorify, support, and perpetuate these actions to keep the ethnostate alive.
  Why do Zionists glorify, support, or partake in rape, murder, and thievery?
  First, Zionists believe racial Jews have the literal right commit such heinous actions against others, as Zionism holds racial Jews to be superior to others or as "God's chosen people". Second, even if these actions are deemed evil, Zionism justifies them as "necessary" evils, as they ensure the establishment and perpetuation of the Jewish ethnostate--something Zionism holds above all else.
  Summary
  A person who is a Zionist is a person who believes that racial Jews have the right to rape, murder, and rob others, whether due to their perceived privilege or to ensure the establishment and perpetuation of their ethnostate.
  I hope this answers your question!

If a true god exist he could care less what food you eat. Be good, be kind and leave things better than you found them . I dunno ...

Generally no, but it depends on the biscuits. Flour is not permitted and baking powder is ok if it is not derived from cornstarch. Some places sell kosher for Passover baking powder.
- Not enough affliction in the cornstarch, he loves that stuff

Do whatever you want. Religion is made up and there's no need to let idiotic peer pressure control you.
- I was curious about the practice and culture of people I'm not familiar with.