Preheat oven to 425°F. Line a large rimmed baking sheet with parchment for easy cleanup.
Cut potatoes into halves or quarters for even pieces. Pat dry to remove surface moisture.
Toss potatoes with olive oil in a large bowl until lightly coated.
Add 3/4 cup Parmesan, garlic powder, paprika, Italian seasoning, salt, pepper, and red pepper flakes if using. Stir to coat well.
Spread potatoes on the sheet pan, cut sides down and spaced out for browning.
Roast for 20 minutes. Flip potatoes and continue roasting until crisp and golden, 12–15 minutes more.
Sprinkle with remaining Parmesan and parsley. Toss briefly and serve hot.
Notes
Variation: Swap Italian seasoning for dried thyme and a pinch of lemon zest. For extra crunch, add 1 tbsp fine breadcrumbs with the Parmesan. Leftovers reheat well in a 400°F oven for 8–10 minutes, or air-fry until crisp.This recipe is an original creation inspired by classic Easy Parmesan Roasted Potatoes flavors. All ingredient ratios and instructions are independently developed.