Sprinkle chicken with salt and pepper; coat with flour.
Pour oil into a large ovenproof skillet; place over medium heat until hot. Add chicken, and cook until lightly browned, turning once. Remove chicken; wipe drippings from skillet. Return chicken to skillet; add wine. Arrange onion rings over chicken.
Bake, uncovered, at 450° for 30 minutes or until done, basting occasionally. Serve immediately.
Laurey's Catering and Gourmet-to-Go, Asheville, North Carolina