With your oven rack place one up from the bottom, preheat the oven to 400 degrees F. and line a baking sheet with parchment paper.*
Wash your potatoe(s) with a vegetable brush and If organic, leave the skin of the sweet potato on. If not, peel potato first.
Cut into thinly fry shapes, keeping them roughly the same size for even cooking. Place in a large mixing bowl. Add 2 Tablespoons of oil, sea salt, garlic powder and black pepper. Using your hands, rub the ingredients into all of the potato slices. If the fries seem too dry, add one more Tablespoon of oil. Place them onto baking sheet, trying not to overlap.
Bake fries for about 15 - 20 minutes. Remove from the oven and flip the fries using a spatula. Return to oven and continue baking for about 5 - 10 minutes more or until they are cooked to your liking. Once you have removed the fries from the oven, give them a few minutes to cool and to become crispier.
*I don't use parchment paper when baking my fries and they never stick, but if you are worried about them sticking to the baking sheet line it with parchment paper.