1. Lay out tots in a layer in a sprayed casserole dish.
2. In a large bowl mix together chicken, sour cream, cream of chicken soup, 1 cup of cheese, ranch seasoning, and bacon.
3. Spread mixture over tot layer.
4. Sprinkle over remaining cheese.
5. Bake in 350 degree over for 45-50 minutes until hot and browned on top.