Preheat the oven to 400°F and line a baking sheet with parchment paper
Evenly sprinkle a thin layer of Parmesan cheese across the baking sheet
Arrange the onion rings in a single layer
Lightly brush the onion rings with olive oil and season with salt, garlic powder, and paprika
Bake for 20 minutes or until golden brown
Cool for 10 minutes before breaking apart
