Season the meat evenly with salt, pepper, garlic, and onion.
To a large cast iron pan, add just enough oil to fully cover the bottom of the pan. Heat over medium-high heat until it's hot enough to sear meat, about 375F.
Sear the pork chops on one side for about 3-4 minutes until the side is deep golden brown. Flip and continue frying for another 3-4 minutes or until internal temperature reaches 145F.
Let the chops rest for 3 minutes, then serve with your favorite side dish.