Sophomore Rec Letter?

<p>Is it bad if I ask my AP Chemistry teacher from sophomore year for a rec letter for me? I already have one junior year AP English teacher to write my rec, but for the second one, I really wanted my AP Chem teacher to write it because she knows me the best out of all the teachers I've had, and my major may very well be chemistry-related. I do have back up, but the other teachers just don't know me as well. Advice?</p>