If you thought tahini functioned mainly as a condiment, you’ll love it in a marinade—it makes the chicken buttery tender without an overwhelming amount of sesame flavor in the finished dish. It also helps the chicken char nicely on the grill. The chopped salad is inspired by the Israeli original, usually stuffed into pita pockets with shawarma (slow-grilled meat) and drizzled with tahini sauce. We reserve some of the tahini mixture from the marinade for topping the finished dish. You can also substitute couscous, cooked bulgur, or toasted whole-wheat pita wedges for the rice.