Preheat oven to 400 degrees. Prep baking dish with cooking spray.
Add potatoes to the baking dish. Add butter, paprika, garlic powder,salt, and pepper into a small bowl. Stir to combine.
Pour butter mixture over potatoes.
Toss the butter mixture over the potatoes until they are evenly coated.
Cook potatoes at 400 degrees for 45-50 minutes or until tender.
Add the chicken to the remaining bacon grease in the skillet.
Cook on medium heat until completely cooked - about 8 minutes.
Take the potatoes out of the oven. Turn off the oven.
Sprinkle one of the cups of cheese over the potatoes.
Layer the chicken, bacon pieces, and green onions on top.
Sprinkle remaining cup of cheese on top.
Put the casserole back in the still warm oven for about 3-5 minutes. (Or until the cheese melts)
Optionally top each plate with casserole with sour cream and green onions.