Preheat oven to 350 degrees Fahrenheit.
Line a large baking sheet with parchment paper. Pour the chickpeas on top and spread them flat.
Add the oil and spices, and use your hands to mix and roll all the chickpeas around, so they are evenly coated.
Make sure the chickpeas are flat in a single layer before putting into the oven.
After about 25 minutes, carefully shake the pan or use tongs to move the chickpeas around, and then continue cooking for another 25 minutes, until crisp.
Can be eaten as a snack, or used like croutons on top of a salad.