To start, preheat your oven to 425F. Cooked your chicken and bacon to your liking. Shred the chicken and break the bacon into small pieces, set aside. To make the butter ranch sauce, heat a small saucepan on medium heat and add butter, Let melt completely, then add your flour. Whisk until all incorporated. Slowly add your milk while whisking constantly. Once all the milk is added, put in your salt and pepper and whisk until creamy. Once creamy, add ranch and mix for another minute. Shut burner off, but keep the pot on it. Take the 9×13 cooking dish and oil it up. Add the shredded chicken, make sure to flatten it out. Add the sauce on top of the chicken. Add half the bag or 4 oz of cheese to the dish. Then add your layer of tater tots. Place in preheated oven for 20 minutes. Once that is up add remainder of the cheese and your bacon bits and place back into the oven for another 5 minutes or until the tots become golden brown. Let cool and serve.