Some people are kind of sensitive to peanuts.... I know they bother me sometimes. And you're right about the protein drink... maybe it was just the combination of those things. Did you try just having a rolaids or something like that?

If the problem persists, I would like to suggest that you stick to whole foods and keep the pepper, onions and garlic to a minimum for a couple of days. Give your tummy time to settle down and you'll probably be okay after that.