When baking pork chops in the oven at 400 F you should bake the pork chops for 7 to 8 minutes per 1/2 lb of pork chops you're baking.
So for a 1 lb pork chop you would bake the 1 lb pork chops for about 14 to 18 minutes at 400 F degrees.
For a 2 lb pork chop you would bake the pork chops for about 30 to 33 minutes.
Just figure on 7 to 8 minutes per each 1/2 lb of the pork chops when baking it at 400 F.
For me it takes me 20 minutes of baking time for my pork chops to be fully done and cooked the way I like it.
If you want the pork chops to be more cooked then increase the cooking time a few minutes or if you like it medium rare then decrease the cooking time by a few minutes.
Pork Chops are fully cooked when the internal temperature reaches 145 F to 160 F degrees.
A meat thermometer is a good thing to have to tell if your meat is done.