WHISK together the mustard and mayonnaise in a small bowl. In a shallow bowl mix together the bread crumbs, lemon zest, sage, salt, and pepper.
POUND the pork chops between two sheets of wax paper until just tenderized, but not too thin.
Working with each chop individually, dip the chop in the mustard mixture so that it is well coated. Then place it in the Panko mixture and turn it once or twice to make sure it is completely coated. Set side. Repeat with remaining three pork chops so they all are evenly breaded.
MELT 1 tablespoon of butter with 1 tablespoon of olive oil over medium heat in a large skillet. Swirl so that it all coats the bottom of the pan. Then, place the pork chops in the pan and cook for about 10 minutes per side. Drizzle in a touch more olive oil if the bottom of the pan gets dry. Check doneness by cutting into one of the chops. Serve!