03Pat chops dry and season with salt and pepper. Heat oil in skillet over moderately high heat until hot but not smoking, then brown chops, about 3 minutes per side.
04Transfer skillet to oven and roast until an instant-read thermometer inserted horizontally 2 inches into meat registers 155°F, 7 to 9 minutes. Transfer chops with tongs to a platter, leaving fat in skillet, and cover chops loosely with foil to keep warm.
05Sauté shallots in fat remaining in skillet over moderately high heat, stirring, until golden, about 5 minutes. Add wine and deglaze by boiling over high heat, scraping up brown bits, until reduced by half. Add cranberries and stock and simmer, stirring occasionally, until cranberries begin to burst, about 2 minutes. Stir in brown sugar and thyme and simmer, stirring, until berries are collapsed, about 3 minutes. Remove from heat and stir in butter until incorporated, then season with salt and pepper.
06While sauce is cooking, reheat chard over moderate heat, stirring. Divide among 4 plates and top with chops, then spoon sauce over.