Preheat oven to 200 degrees celsius.
Lightly spray a baking sheet with non-stick spray. Set aside.
Rinse and thoroughly dry the chickpeas in a paper towel.
In a small bowl, mix together cumin, paprika, garlic powder, salt and pepper. Set aside.
Bake dried chickpeas in the preheated oven on prepared baking sheet for 15 minutes (do not add the other ingredients yet).
Remove the chickpeas from the oven and drizzle ½ tablespoon olive oil over the chickpeas, stirring until evenly coated. If necessary, slowly add more olive oil until all the chickpeas are lightly coated with olive oil.
Add spices to chickpeas and stir until evenly coated.
Return to the oven and bake for 10 more minutes, then stir.
Return stirred chickpeas to the oven and bake them for an additional 5-10 minutes until desired crispiness is achieved (a total of 30-35 minutes of baking).
Turn off oven and leave the oven door ajar. Let chickpeas cool in the oven to achieve maximum crispiness.