Preheat oven to 450°F and line a baking sheet with parchment paper.
In a large bowl, add oil, potatoes, salt, pepper, and garlic powder. Toss to combine and then spreadinto an even layer on the bakingsheet.
Bake for 30 minutes, flipping the potatoes halfway through, or until golden brown.
Broil the potatoes for an additional 3-5 minutes, or until crispy on the outside.
Serve immediately.