Drain and rinse the chickpeas. Dry well using paper towels. Discard any loose skins.
Put chickpeas in a small bowl and coat them evenly with the olive oil, garlic powder, salt, and pepper.
Pour the chickpeas into a rimmed baking sheet. Bake for 45-50 minutes. Shake the pan several times throughout the baking. Towards the end of roasting, you want to check on the chickpeas often as they can burn quickly.
Allow the chickpeas to cool in the pan after removing from the oven.
Spicy: Use 1 tablespoon olive oil, ½ teaspoon cumin, ½ teaspoon chili, pinch of cayenne, salt, and pepper. Honey Cinnamon: Use 1 tablespoon olive oil, ½ teaspoon cinnamon, and 1 tablespoon honey.