Heat a skillet on med-high and add the butter or olive oil. Place your pork in pan and sprinkle garlic powder on one side. Let cook for 3 minutes and turn over and repeat garlic powder and let cook for 3 minutes. Brush honey/mustard mix onto one side of pork with a basting brush. Turn and let cook for 5 minutes. Meanwhile brush rest of honey/mustard mix on other side of pork. After one side has cooked turn over and cook other side for 5 more minutes.
Always test for doneness at 165* on meat thermometer.