Preparing a dish in the “pizzaiola” style refers to pizza-makers in Naples, Italy, who would sometimes toss poultry, pork, steak or fish into their pizza-style marinara sauce to cook on the stovetop. Here, we use chicken breasts, browning them first in a bit of oil, then submerging them in a tomato-and-herb sauce to cook. Served beside our Cheese Tortellini, it’s a nourishing dish that works just as well on a busy weeknight table as at a dinner party.