Season both sides of the pork chops generously with salt and pepper.
Heat 1 tablespoon of oil in a large skillet over medium-high heat.
Cook the pork chops in batches, about 8 minutes total, flipping once, until browned and cooked through. Remove chops and set aside, reserving pan juices in the skillet.
Add the remaining 1 tablespoon of oil to the skillet.
Sauté the chopped red onion and sliced mushrooms for about 5 minutes, stirring frequently, until mushrooms are golden and tender.
Stir in the condensed cream of mushroom soup and simmer for 5 minutes, stirring occasionally, until the sauce thickens.
Return the reserved pan juices to the skillet and stir into the sauce to enhance flavor.
Serve the pork chops hot, topped with the creamy mushroom sauce.