This also raises the question: should I be eating orange peels too? Or how about watermelon rind?
I don't know, it seems to me that you are supposed to eat the fruit inside, and the skin is just a packaging for it to ride in. It probably won't kill you, but did it really taste good? (I have a mental image of finishing off a tub of oatmeal and eating the cardboard)
I'll stick to eating the meat of the fruit.