Bone-in chicken breasts require 40 to 50 minutes a 350-degree oven to achieve a 165-degree internal temperature, the temperature at which chicken is safe to consume. When grilling, bone-in chicken breasts reach the recommended temperature when cooked 14 to 17 minutes on each side.
Bone-in chicken stays moist because the bone helps distribute heat evenly throughout the meat while it cooks, and the exterior skin keeps the meat from drying out before cooking is complete. The juice from citrus fruits like oranges and lemons or marinades and rubs also keep grilled and baked chicken moist and flavorful. Roasting at a slightly higher temperature on a rack is another trick for moist meat and crispy skin.