The baking time for chicken breasts depends on their size, thickness, and oven temperature, but here are general guidelines:

• At 400°F (204°C), bake boneless, skinless chicken breasts for about 20 to 25 minutes until the internal temperature reaches 165°F (75°C)

• For smaller breasts (around 5 oz), bake for 18 to 20 minutes; medium breasts (7 oz) for 20 to 22 minutes; and large breasts (9 oz) for 22 to 25 minutes at 425°F (220°C)

• At 450°F (232°C), chicken breasts typically take 15 to 18 minutes, depending on thickness, with a recommended internal temperature of 165°F for doneness

• At 375°F (190°C), boneless, skinless breasts generally bake for 20 to 30 minutes, while bone-in, skin-on breasts require 35 to 40 minutes

• At 200°C (about 400°F), baking time is around 20 to 25 minutes

The key to perfectly baked chicken breast is using a meat thermometer to ensure the thickest part reaches 165°F (75°C) and letting the chicken rest for 5 to 10 minutes after baking to retain juices

. In summary, for boneless, skinless chicken breasts, baking at 400-425°F for about 20-25 minutes until 165°F internally is a reliable method. Adjust time based on thickness and weight, and always check temperature for safety and best texture.