Preheat your oven to 400°F (200°C). Start by thoroughly drying the chickpeas. Spread them out on a clean kitchen towel or paper towels and pat them until they are completely dry; moisture is the enemy of crispiness.
Place the dried chickpeas on your baking sheet. Drizzle with olive oil and toss them well to ensure every bean is evenly coated. Spread them out in a single layer so they have space to crisp up rather than steam.
Roast the chickpeas for 25 to 30 minutes, giving the pan a good shake halfway through to ensure even browning. You want them to be golden and firm to the touch.
Remove the tray from the oven. Immediately sprinkle the garlic powder, smoked paprika, salt, and grated Parmesan over the hot chickpeas. Toss them right on the pan until the cheese begins to melt slightly and coat the beans. Sprinkle with dried parsley before serving.