I've said it before and I'll say it again: You can't ruin chili.
Not if you put in chick peas instead of standard chili beans. Not if you put in a mixture of Prego spaghetti sauce and regular tomato sauce. Not if even if you eat some leftovers and absentmindedly throw the remaining leftovers in the freezer without the lid being completely air-tight. Defrost, then heat through.