Blend Wish-Bone® Italian Dressing, wine and mustard in large shallow baking dish; reserve 1/4 cup. Add chicken and green onions to baking dish; turn to coat. Cover and marinate in refrigerator, turning occasionally, at least 3 hours.
Remove chicken from marinade, discarding marinade. Grill or broil chicken, turning and basting frequently with reserved marinade, 35 minutes or until chicken is thoroughly cooked.