Preheat oven to 375
Generously season breast with garlic salt, and pepper, and herbs in a large zip lock baggy. Let sit in fridge overnight.
Place chicken in pan and bake for 30 minutes or until chicken is completely cooked.
In skillet, heat butter over medium heat.
Add garlic slices and saute' 2 to 3 minutes.
Stir in mushrooms and onions and cook until onions are
transparent(about 3 to 4 minutes)
Remove chicken from oven.
Pour garlic sauce over chicken and return chicken to oven.
Lower heat to 350 and continue to cook for 5-15 minutes.
Remove from oven.
Serve over cooked rice or pasta.