For extra crispiness, soak the sweet potato slices in cold water for 30 minutes before baking. Drain well and pat dry before proceeding with the recipe. Adjust the amount of garlic-pepper seasoning to your liking. You can also experiment with other spices, such as smoked paprika, chili powder, or cinnamon. Store leftover chips in an airtight container at room temperature for up to 2 days.