Saucy Moroccan Chicken and Lemon with Date Couscous

Name: Saucy Moroccan Chicken and Lemon with Date Couscous
Ingredients: 1 lemon, cut into 1/4-inch thick rounds (ends and seeds discarded); 2 teaspoons sugar; Kosher salt and freshly ground black pepper; 3 tablespoons extra-virgin olive oil; 1 1/2 cups couscous; 1/4 cup chopped pitted dates or golden raisins; 1/2 cup loosely packed chopped fresh cilantro; 1/2 teaspoon ground cinnamon; 1/2 teaspoon ground coriander; 8 small boneless, skinless chicken thighs (about 2 pounds total); 3 tablespoons tomato paste; One 15-ounce can chickpeas, rinsed and drained