Energy bars get tiresome pretty quickly in my experience. My favorite jersey pocket snack is fig newtons. Of the energy products, I like Gu Chomps the best, but more often have fig newtons or some other "non sport specific food" in my jersey pocket. Dried fruits work well and are fairly available.

FWIW, I have never found it difficult to carry bananas in a jersey pocket without having them get mashed as long as they aren't too ripe to start with.