1. Bring a pot of salted water to a boil.
2. Blanch the broccoli in the boiling water and drain.
3. Cut the bell peppers, cherry tomatoes, red onion, and celery and place them in a salad bowl.
4. Peel and mince the garlic. Sauté it in a pan with a drizzle of oil.
5. Drain the chickpeas and cook them with the garlic, salt, and pepper for a few minutes.
6. Add the olives and cook for one minute.
7. Add the chickpeas to the other vegetables, mix well, and adjust the seasoning if necessary.
8. Chill in the refrigerator for 30 minutes.
Serve the chickpea salad with olives and broccoli.