Why cook one chicken when you can cook two? Lay the foundations for the rest of the week with this low-maintenance meal that pays off now and later. The birds roast on a rack atop carrots, zucchini, tomatoes and chickpeas, leaving the drippings to season the vegetables—with herbes salées and harissa upping the ante. Stir once and serve with your choice of white or dark meat and a fast and fluffy side of couscous.