1. Combine salt, pepper, garlic, and thyme.
2. Lay chicken pieces into a 11x13 baking pan. Sprinkle seasonings over chicken.
3. Combine onions, stock, and lemon juice in a sauce pan. Heat to a boil.
4. Pour hot lemon mixtue around chicken. Top each chicken piece with a lemon slice.
5. Bake for 30 minutes at 400 degrees until golden brown and juices are clear colored.