Are the Pork Chops Boneless?
Are you cooking them in any sauce?
You may want to quickly brown the chops to seer them, before putting them in the Pre Heated oven at 350*F. This way the juices are sealed in. I suggest putting a little water or broth in the bottom of the pan.
Once they are seered, place them in the pan covered with tin foil and place into the oven. Cook the pork chops 35-45 mins. The more chops you make in the pan the longer it will take them to cook. 2 chops will be the least time where 6 chops would take the longest.
When done you can pull them out and allow them to rest. This helps the juices to settle so they are not dry.
Serve with a side dish and enjoy.