Preheat oven to 450°F. Coat cooking sheet with cooking spray.
In a shallow dish, combine potato flakes, Parmesan cheese, paprika, Italian seasoning, garlic powder, onion powder, 1/4 teaspoon salt, and pepper. Pour 1 tablespoon olive oil over the potato flake mixture and use a fork to mix the oil into the potato flake mixture. Continue mixing until there are no more clumps of oil. (Mixing the oil into the potato flake mixture is a key step to not having a dry crust on the outside.)
In another shallow dish, add the flour, and in another add the beaten egg.
Coat fish with flour, then egg, and then generously coat the fish with the seasoned potato flake mixture.
Heat one tablespoon oil in a large skillet. Cook fish in the skillet until browned on the outside, about 3 minutes on both sides. Spray fish with cooking spray if it looks dry. Using a spatula, transfer the fish to the cooking sheet and bake for 4-5 minutes, or until fully cooked.