In a mixing bowl, mash the boiled chickpeas until they form a coarse paste.
Stir in the tahini mixture and the walnut mixture until combined.
Fold in the parsley, mint, olive oil, and spices. Taste and adjust salt as needed.
Transfer to a shallow serving dish. Garnish with olive oil, olives, and pistachios.
Serve with flatbread, as it would have been enjoyed in the medieval Islamic world.
