Mix dressings (1 part each). Brush both sides of chicken with dressing mixture before grilling. Brush grill rack with vegetable oil before heating grill. Place chicken on grill rack or on rack in broiler pan. Cover and grill 4 to 6 inches from medium heat or broil 15 to 20 minutes, brushing occasionally with dressing mixture and turning once, until juice is no longer pink when centers of thickest pieces are cut.