Season the chops, then brown in butter. Remove to a roasting pan and finish in the oven at 350.
Caramelize the onion in the browning pan, add the vinegar, chili powder, maple syrup, water, and Worcestershire sauce, then bring to a boil. Stir in the flour and continue cooking until thickened.
Plate the chops, garnish with the sauce, and serve hot.