Preheat oven to 450 degrees F (230 degrees C).
Blot chickpeas with a paper towel to dry them.In a bowl, toss chickpeas with olive oil, and season to taste with salt, garlic salt, and cayenne pepper, if using. Spread on a baking sheet, and bake for 30 to 40 minutes, until browned and crunchy. Watch carefully the last few minutes to avoid burning.
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