Preheat oven to 400 degrees and line a rimmed baking sheet with parchment paper.
Transfer chickpeas to parchment lined baking sheet. Spray with cooking spray and sprinkle generously with garlic salt. Bake for 20-30 min, removing 2-3 times during cooking to stir and apply another coating of cooking spray and garlic salt. Allow to cool a few minutes on pan before adding to salad.