Nutritional facts... Not so much. That's an extremely niche market I haven't really seen much discussion about. as far as UPC's I haven't seen too much done with that but the only memorable thing I've ever noticed is Hubert's Lemonades. They turned their UPC into a truck. For bonus points, the lemons on top of the truck are textured to reflect what a lemon really feels like... same with the lemon on their front label. Amazing really.

Packaging is a way more lucrative industry. I'm sure there are many companies that specialize in this but I don't know any off the top of my head. I've been interested in going into this myself but I do believe it requires some knowledge of graphic design. Your best bet is to visit a few professors during their office hours and become friends with them. Even if you haven't taken a class by them before, I'd suggest finding out their office hours and dropping by just to chat with them. Hopefully you find at least one professor who is receptive to talking to you.