Preheat the oven to 450° F. Line a rimmed baking sheet with parchment paper or a silpat.
Place cubed potatoes on the prepared baking sheet, drizzle with oil, and season with salt & pepper. Using a spatula, toss the potatoes in the oil and spices, and spread out the potatoes evenly on the baking sheet.
Bake for 20 minutes. Give the potatoes a stir, and spread them out again on the baking sheet. Bake for additional 20 minutes, or until potatoes are golden brown on the edges and tender when pierced with a fork.