how long to cook chicken in oven
Baking Your Chicken. 1  1. Cook your chicken breasts at 400 degrees Fahrenheit (205 degrees Celsius). Make sure your oven is completely preheated before putting the chicken in the oven. 2  2. Check the chicken's temperature regularly. Usually, it takes around 30 to 40 minutes to bake chicken breast. You should start using a meat thermometer to check the temperature about 20 minutes in. Some chicken breasts may cook slightly faster, so you want to make sure it does not burn. Check the chicken every 10 minutes or so after the first 20 minutes.