This depends on whether the pork chops are stuffed, how thick they are, and the temperature of the oven. The best way to know for certain that the chops are done is to insert a meat thermometer into the middle of a chop to monitor the temperature. As mentioned above, it will be safe to eat when the internal temperature reaches 145 degrees, though you can pull them out early (at 135 degrees), tent with foil, and let them rest until they reach 145 degrees. This will take about 10 minutes.