Prick the eggplant all over with a small knife to allow steam to escape
On a grill or under the broiler, char the eggplant until the skin is black and blistered and the eggplant has collapsed, about 15-20 minutes, rotating to blacken all sides
Remove from the heat and allow to cool
In a food processor blend the chickpeas, olive oil, tahini, lemon zest, and juice with a couple good pinches of salt
Remove the charred skin from the eggplant and blend the eggplant pulp with the hummus