Hey, I'm in the same boat as you. I'm a senior as well and I'll be getting my chemistry degree next summer but with a minor in biology.
I feel pretty down at the moment too. I feel very unprepared and I got pretty good grades, so I blame it on some teachers who are extremely uninspiring.
So it's not just you. And I want to have a career in science and I worry so much about not getting a place or if I'm even smart enough for it.
I think we're supposed to graduate with only a basic knowledge of chemistry and with a sense of how to solve problems that arise in a lab. Or at least I hope so.
Haven't seen Breaking Bad, but if it's chemistry related, then I'll check it out.