When is chicken unsafe to eat?

Chicken is unsafe to eat when it is undercooked, as it can harbor harmful bacteria like Salmonella and Campylobacter. It should be cooked to an internal temperature of 165°F (75°C) to ensure safety. Additionally, chicken that has been left out at room temperature for more than two hours or shows signs of spoilage, such as an off smell or slimy texture, should also be discarded to prevent foodborne illness. Always practice proper food handling and storage to minimize risks.