Set oven control to broil. Line broiler pan or cookie sheet with foil; spray with cooking spray. Rub steak with vegetable oil, then Chinese five-spice powder. Place on pan. Broil with top 6 inches from heat 5 to 6 minutes on each side, until cooked to desired doneness (140°F for medium). Transfer steak to cutting board, cover with foil; let rest 5 minutes.