Preheat oven to 350°F. Grease pan.
Cut chicken breasts in half and lay in the center of the pan.
Quarter potatoes. Place on one side of the chicken.
Place green beans on the other side of the chicken.
Melt butter and pour over entire dish. Sprinkle ranch packets evenly over entire dish.
Cover with aluminum foil. Bake for 1 hour or until chicken has reached 165°F.