My first thought is that it strikes me as a bit wasteful, but if you prefer to do it, go ahead. I find that nitrile gloves have an odor that I would be afraid of transferring to the food, but that's just me -- I'm hypersensitive to odors.
BTW, for those of you with issues getting your hands free of pepper residue and/or onion/garlic odors, here are a couple of simple remedies:
For peppers: the heat in peppers is in the oil, so you need to use oil to dissolve the residue so that you can wash it off. What I do is really slather my hands with rich hand lotion after handling peppers, leave it on for about 5 minutes, then wash thoroughly with dishwashing liquid; the pepper oil residue will be gone. (Cooking oil works equally well, but doesn't smell as nice when you have to leave it on your hands for 5 minutes.)
For onion/garlic odor: the remedy for this is actually stainless steel. To get rid of the smell, hold a stainless steel fork, spoon, etc. in your hands and hold it under running cold water. Rub your hands all over the steel item with the water running for about 30 seconds, and there will be absolutely no residual odor. (Don't ask me to explain why it works, but a chemist taught me this trick; it is some kind of chemical reaction between the steel and the enzymes in the plant.)