Preheat your oven to 400°F (200°C).
Drain and rinse the chickpeas in a colander. Pat them dry with a paper towel.
In a bowl, mix together the olive oil, salt, paprika, garlic powder, cumin, and cayenne pepper (if using).
Add the chickpeas to the bowl and toss them until they're evenly coated with the spice mixture.
Spread the chickpeas out in a single layer on a baking sheet lined with parchment paper.
Roast the chickpeas in the oven for 20-30 minutes, or until they're crispy and golden brown. Shake the pan every 10 minutes to ensure even cooking.
Remove the chickpeas from the oven and let them cool for a few minutes before serving. Enjoy as a snack or add them to salads, soups, or grain bowls.