In a small bowl, stir together 2/3 cup yogurt, mustard and zests. Refrigerate until serving., In a large bowl, combine remaining 2 tablespoons yogurt, mint, garlic, ras el hanout, pepper, cumin and salt. Crumble chicken into bowl; mix lightly but thoroughly. Shape into 8 1/2-in.-thick patties; press small indention in middle of each patty. , In a large nonstick skillet, heat oil over medium heat. Add patties; cook until golden brown and no longer pink, 4-5 minutes on each side. Serve patties inside pita pocket with sauce, lettuce and tomato.