Preheat oven to 350ºF. Lightly coat a rimmed baking sheet with olive oil cooking spray. Spread chickpeas on baking sheet and sprinkle with garlic powder and cayenne; toss to coat.
Roast on bottom rack of oven, shaking pan about every 15 minutes, until browned and crunchy, about 45 to 50 minutes. Cool before serving.
Nutrition Information per serving:
114 Cal., 1.8 g. fat, 7.9 g. fiber
