Preheat your oven to 425°F. Clean the potatoes under running water, cut them in half, and score the potatoes using a small sharp knife.
In a large bowl, combine the melted butter, garlic powder, Parmesan cheese, and halved potatoes. Season with sea salt, black pepper, and dried oregano. Stir to coat the potatoes.
Spread the potatoes out on a baking pan. Bake in the preheated oven until golden brown and crispy, about 35 minutes.
Remove the potatoes from the oven and serve with a sour cream dip.