Preheat oven to 400 degrees F. In small bowl, combine grated cheese, garlic powder, paprika, oregano, salt, and pepper, stirring with fork until mixed. Pour oil into 9” x 11” glass baking dish and tilt dish so olive oil evenly coats entire bottom. Carefully and evenly cover bottom of dish with cheese mixture. Arrange potatoes on top of cheese mixture in a single layer, cut side down, pressing down to ensure potatoes are fully in contact with cheese mixture. Bake for 30 to 40 minutes, or until cheese is browned and potatoes are soft when pressed or pierced with fork. Remove from oven and let rest in baking dish for 5 minutes. Using a small spatula, remove potatoes from dish, being careful to keep the cheese layer intact on the cut side of potato.