Preheat oven to 375°F. Cook bacon until crispy, drain, and crumble.
Brush cast iron skillet with oil. Press dough inside and pre-bake 5 min.
Sprinkle ranch seasoning on dough, spread ranch dressing.
Top with mozzarella, chicken, onion, and bacon.
Bake 20 min. Top with tomato slices.
Brush crust with melted ranch butter. Broil 2-3 min.
