Preheat oven to 300 degrees. Drain, rinse, and pat dry chickpeas. Toss chickpeas in a bowl with olive oil, salt, pepper, and either garam masala (an Indian blend), dried oregano, or ground cumin.
Arrange them in a single layer on a rimmed baking sheet, and cook, stirring occasionally, until browned and just beginning to crisp, about 50 minutes. Serve at room temperature.