For butterflied chops, I'd echo another poster's recommendation of brining. It's much harder to "hockey puck" pork chops when they've been brined first.
30 minutes in a freezer bag filled with 1/4 cup kosher salt dissolved in a quart of water (for 2 chops) usually does the trick for me.
Recently, Cooks Illustrated had a barbecued pork chop pan recipe. they used bone-in chops, but just this week, I used boneless butterflied chops and it worked fine. After brining, I rinsed and dried the chops and then rubbed with a dry rub described in the article (I think brown sugar, paprika, cumin and black pepper, but I don't have it in front of me).
I then cooked the chops 4 minutes per side and removed from the pan. I used a neutral oil as another poster mentioned. Then I brushed w/ bbq sauce (you could make your own or use your favorite bottled) and returned the chops to the pan to caramelize the sauce. The internal temp should be something like 140 or 150 and then you should allow the chops to sit 5-10 minutes before serving.
very good. very easy. good use of pork chops, which I frequently find on sale at Dominicks.