Place avocado in a medium mixing bowl. Mash slightly and set aside.
Put chickpeas into a food processor or blender, and pulse 2 or 3 times just to break up beans (do not puree). Add to mashed avocado. Add lime juice, celery, onion and herbs and mix well to incorporate. Mixture should be a creamy, chunky consistency similar to egg salad. Add salt and pepper to taste.