the time of cooking pork chops in an oven depends on the temperature degree you adjust to cook, for example if you adjust the oven at 350 degrees F, pork chops take 20 to 30 minutes, at 375 Degrees F, they take about 15 to 25 minutes, at 400 Degrees F, they take between 10 and 20 minutes, and at 425 Degrees F, they take between 8 and 18 minutes.