In this elegant, easy summer meal, grilled chicken is marinated in a vinaigrette, infused with herbes de Provence, that tenderizes and seasons the thighs Another simple mustard vinaigrette dresses the tomatoes after they come off the grill, as do the flavorful juices from the chicken Slashing the thighs through to the bone encourages heat to penetrate the meat, so your chicken will be cooked through before the skin burns