What temperature and how long does it take to reheat chicken breasts?

Hot and fast! My experience is working in a restaurant, where we would pre-cook or par-cook some dishes. The 400 - 500 F range for 3-10 minutes works for most food. Fried foods should be near the upper end; moist foods and things that can "brown" (like Pizza or macaroni and cheese) toward the lower end of the range. If you're heating different things at once, go for the middle (around 450 F) and cover moist dishes with foil to prevent drying. Hope that helps! -- J