Preheat oven to 350.
Heat non-stick saucepan over MED.
Add the onion. Stir constantly until tender. 5-10 mins.
Transfer onions to glass baking dish.
Place chicken atop onions.
Place garlic around and on the chicken.
Squeeze on lemon juice & sprinkle with pepper.
Cover tightly either with lid or aluminum foil.
Cook for 30-45 mins or until chicken is no longer pink.
Note: You don't have to eat the onions as your veggie (it's primarily for flavor). Just eat the chicken and add veggie of your choice.