Place a butter slice on top of each piece of chicken and roast until the chicken is browned and cooked through, and registers at least 165ºF (74ºC) on a digital thermometer, 40 to 45 minutes.☞ TESTER TIP: If your chicken is cooked through but the skin isn’t as golden as you’d like, turn on the broiler for a couple of minutes to crisp up the skin.