01 - Preheat the oven to 425°F and line a large baking sheet with parchment paper or lightly oil it.
02 - Place potato cubes in a large bowl. Add olive oil, salt, pepper, garlic powder, rosemary, and smoked paprika if used. Toss to coat evenly.
03 - Spread potatoes in a single layer on the prepared baking sheet, avoiding crowding to ensure crispiness.
04 - Roast for 35 to 40 minutes, flipping halfway through, until potatoes are golden and crispy on edges.
05 - Transfer to a serving dish, garnish with fresh parsley if desired, and serve hot.