Question: how long do you cook chicken on the grill at 400 degrees?
Answer: Preheat gas grill before cooking to medium-high heat, or 350-400° F. Lightly grease grill surface and add chicken. Close lid and cook 8 minutes, or until bottoms are browned with sear marks. Rotate chicken, close lid, reduce heat to medium, and cook 7-10 minutes more, or until internal temperature reaches 165° F.