how long to bake boneless skinless chicken breast uncovered
1 Place the breasts in the baking dish, and place the dish in the oven. 2  Approximate baking times for 2 breasts: 3  Boneless chicken breast - 20 to 30 minutes, uncovered; add 5 minutes per each extra pair.4  Bone-in chicken breast - 30 to 40 minutes, uncovered; add 5 minutes per each additional pair. Wash the chicken breasts with cold water and pat them dry. 2  Coat a baking dish with non-stick spray. 3  Brush the breasts lightly with olive oil, and season as you like. 4  You can season on the skin, under the skin, or both if you like.