Preheat oven to 400 degrees F. Heat oil in a large skillet over medium heat. Add turkey sausage to the pan, breaking up with a spatula or wooden spoon into pieces and cook for about 3-4 minutes.
Add peppers, onions, garlic and potatoes to the pan. Add seasonings (garlic powder, onion powder, paprika, salt + pepper). Stir and cover. Cook covered for 10 minutes, stirring once halfway through.
Remove cover and stir. Cook for an additional 10 minutes, stirring occasionally until potatoes begin to brown.
Turn off heat and stir in 1 cup cheese.
Transfer veggie and sausage mixture to a 9x9” greased baking dish (or keep in oven safe skillet). Top with remaining ½ cup cheese.
Bake for 10 minutes until the cheese is melted and golden brown. Cool slightly before serving.