Wow, thanks for all the replies everyone! I had two food dishes in thier cage orginally, one on the bottom and one on the very top, it's a homae-made three story cage so it kept them pretty far apart when they ate, but one of them was plastic so of course...it's gone now! Lol. But I will definitely do it again, anything to keep them from fighting like that. And actually, the food is the only thing they argue over, I mean, little disagreements here and there, but they don't fight over water or anything else like that.
Salt and Pepper, haha, guess I'm not the only one who though of food when I got my degus! Lol. And to Amethystebelle, no, Ham is a female and Cheese is her brother, he's bigger and she still beats him up though! Lol.
Oh and actually, that reminds me of a question I've been meaning to get answered. Considering they are brother and sister, do I need to worry about them mating? I mean, if they had little degus I'd be fine with it, but I don't want them to if it's un-safe for them or the babies.
Thanks again everyone!