Place the chicken in a ziploc bag. Sprinkle with salt, Olive Oil, and vinegar. Seal the bag and massage to coat. Allow to rest 30 minutes to 1 hour at room temperature before cooking.
Heat a large skillet over high heat. Place the chicken in the hot pan and sear each side until golden brown, about 3 minutes. Turn the heat down to medium-low, cover, and finish cooking until juices run clear, about 20 minutes.
Transfer to a cutting board and allow to rest for at least 5 minutes before slicing and enjoying on salads, in tacos or burritos, or along with some roasted veggies.