Chicken is a versatile protein that can take center stage on any table. There are scores of ways to prepare chicken, and this recipe for “Pollo Harissa” is seasoned with a fiery, spicy mix that is truly aromatic. Enjoy it, courtesy of “Espa–a: Exploring the Flavors of Spain” (Gibbs Smith) by James Campbell Caruso. Pollo Harissa (Roasted Harissa Chicken with Couscous) Serves 4 1 whole roasting…