In a large mixing bowl, combine the chickpeas, tomatoes, bell pepper, feta cheese, cucumber, onion, and olives.
30 ounces chickpeas, 10 ounces cherry tomatoes, 1 red bell pepper, ¾ cup feta cheese, ½ English cucumber, ½ red onion, ¼ cup Kalamata olives, ¼ cup Castelvetrano olives