Using a cooking thermometer is the best way to ensure they're fully cooked. You'll want to cook them to 145 degrees Fahrenheit. If you're using bone-in pork chops, the temperature will still be the same, it just might take a little longer for the temperature to get there. Make sure you take the temperature close to the bone, and not actually touching the bone. Touching the bone with the thermometer will give you a false reading.