Cooked chicken should be eaten within 3 to 4 days when kept in the fridge at or below 40°F (4°C). After about day 4, the risk of bacterial growth increases, so it's safest to discard any leftovers that haven’t been consumed. If you’re unsure about freshness, check for signs like off odor, sliminess, or a Change in color before deciding to use or toss it. For best quality and safety, store leftovers in airtight containers and refrigerate within two hours of cooking. If you don’t plan to use it within 3 to 4 days, freezing is a good option (it can be frozen for 2 to 6 months for best quality, though texture may change slightly upon thawing). If you’d like, share how you stored the chicken (container type, temperature, and date cooked) and I can help confirm whether it’s still safe to eat.