Preheat the Oven:
Preheat the oven to 425°F (220°C). Line a baking sheet with parchment paper or aluminum foil for easier cleanup.
Prepare the Potatoes:
Wash and scrub the potatoes to remove any dirt. Cut them into bite-sized chunks, about 1-inch pieces. If you prefer crispy skins, leave the skin on, or peel them for a smoother texture.
Season the Potatoes:
Place the chopped potatoes in a large mixing bowl. Drizzle with olive oil and toss to coat evenly.
Add garlic powder, onion powder, rosemary, salt, and pepper. Toss again until the potatoes are evenly seasoned.
Roast the Potatoes:
Spread the seasoned potatoes in a single layer on the prepared baking sheet. Make sure they’re not crowded, as this will allow them to crisp up better.
Roast for 25–30 minutes, flipping halfway through using tongs or a spatula, until the potatoes are golden brown and crispy on the outside.
Serve:
Once done, remove the potatoes from the oven and garnish with fresh parsley, if desired. Serve immediately as a side dish.