Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper for easy cleanup.
Spread the rinsed chickpeas on the baking sheet and pat them dry with a clean kitchen towel.
In a large bowl, combine the olive oil, lemon zest, lemon juice, chopped rosemary, garlic powder, smoked paprika, salt, and pepper. Mix well to create a flavorful marinade.
Add the chickpeas to the bowl and toss until they are evenly coated with the marinade.
Evenly spread the chickpeas on the prepared baking sheet in a single layer.
Roast in the preheated oven for 25-30 minutes, stirring halfway through, until the chickpeas are golden brown and crispy.
Remove from the oven and let them cool slightly; they will become even crispier as they cool.
Taste and adjust seasoning if necessary before serving.
Notes
Serve the roasted chickpeas in a small bowl or on a platter garnished with a sprig of fresh rosemary.