In a large bowl, combine the chickpeas, cucumber, bell pepper, red onion, cherry tomatoes, kalamata olives, feta cheese, and parsley.
In a small bowl, whisk together the olive oil, lemon juice, Dijon mustard, minced garlic, salt, and pepper to create the dressing.
Pour the dressing over the salad and toss to combine. Ensure all ingredients are evenly coated.
Refrigerate for at least 30 minutes before serving to allow the flavors to meld.