1. Coat cold cooking grate with nonstick cooking spray and place on grill over medium-high heat.
2. Lightly spray chicken with cooking spray.
3. Stir together chili powder, oregano, cumin, salt and pepper in a small bowl.
4. Rub mixture over both sides of chicken.
5. Place chicken on grate and grill, covered with grill lid, 6 minutes on each side or until done, basting with reserved Sweet Chili-Ginger Butter sauce on each side during the last 2 minutes of grilling.
6. Serve warm with sauce.