Step 1: Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper or a silicone mat.
Step 2: Rinse the chickpeas under cold water and drain well. Place them on a clean kitchen towel and pat them until they are completely dry to the touch.
Step 3: In a medium bowl, toss the dried chickpeas with olive oil, garlic powder, onion powder, and sea salt until evenly coated.
Step 4: Spread the chickpeas in a single layer on the prepared baking sheet, ensuring they aren't crowded.
Step 5: Roast for 20 minutes, then remove the tray and shake it to rotate the chickpeas for even browning.
Step 6: Roast for another 10-15 minutes until they are golden brown and crunchy.
Step 7: Sprinkle the Parmesan cheese and black pepper over the hot chickpeas. Toss lightly and return to the oven for 2 minutes.
Step 8: Remove from the oven and let them cool for at least 5-10 minutes, as they will continue to crisp up while cooling.