Preparation
Preheat oven to 350 degrees. Combine potatoes and oil in a large bowl and toss well to coat. In a small bowl, combine cayenne pepper,chili powder, cumin, salt and black pepper. Sprinkle over potatoes and toss well until all potatoes are coated with seasoning. Coat a large baking sheet with cooking spray and spread potatoes evenly on baking sheet. Bake for 30 minutes or until golden brown and crispy.