Heat 2 tablespoons of the oil in a very large (12-inch) heavy, ovenproof skillet over medium-high heat. When the oil is hot, but not smoking, add the chicken, skin side down. Cook until the chicken is well browned on the underside, 4 to 5 minutes, adjusting the heat so the chicken doesn’t burn. Using tongs, turn the chicken and brown the other side, about 4 minutes more. Remove the skillet from the heat. Pour off the fat in the skillet. (Remove the chicken briefly to do so, if you wish. I just hold the chicken back with the tongs.)