Prepare MarinadeRinse and pat the chops dry, slit a pocket into each chop about 3 to 4 inches long and as deep as the bone.
Combine the marinade ingredients in a re-sealable bag, place in the refrigerator and marinade for 1 to 2 hours.
Prepare StuffingIn a large frying pan over medium-high heat, add the oil and butter.
When the butter melts and foams, add the pancetta and cook until crispy. Remove to a paper towel-lined plate, leaving the fat in the pan.
Add the mushrooms, sprinkle with salt and pepper and cook over medium-high heat, stirring frequently for 6 minutes.
Add the shallots, sage and pancetta and cook for 3 minutes more.
Remove to a plate to cool, spreading out evenly.
Save olive-oil butter mixture to fry the stuffed pork chops in.
Once cool, add the fontina cheese.
Stuff the Pork ChopsRemove the pork chops from the marinade after the marinating period. Pat dry just a little bit.
Stuff each pork chop with the cooled filling inside the cut pockets.
Close and secure the opening with skewers or toothpicks.
Reserve any remaining stuffing to use in the final sauce.
Bread the Pork ChopsIn a shallow pan or bowl, mix together the Italian seasoning, pepper, panko and flour.
In a second pan or bowl, add the eggs and beat.
Dredge the chops through the egg, then lay in the breading and press to adhere. Repeat with all the chops.
Fry and Bake the Pork ChopsIn the same large frying pan used before for the stuffing, reheat the oil and butter and when shimmering, add the pork chops, cooking until golden brown, about 5 minutes each side.
Hold gently with tongs and cook the edges as well.
Place on a baking pan with a wire rack.
Bake in 350 degree F oven until the meat registers 135 degrees F on a thermometer or 20 minutes.
(Prepare the sauce while the pork chops are baking -- see next step).
Remove from the oven and lightly tent with foil.
Prepare the SauceWhile the pork chops are baking in the oven, prepare the sauce.
In the same pan that the stuffed pork chops were fried in, add the remaining green onions (shallots), any remaining pancetta/mushroom/fontina stuffing, and cook over medium-high heat for 3 - 4 minutes.
Deglaze the pan with the chicken stock, scraping any brown bits from the bottom.
Whisk in the mustard, sour cream, and heavy cream.
Serving the Pork ChopsRemove the stuffed pork chops from the baking pan and foil tent.
Remove the toothpicks/skewers and place them on a serving platter.
Ladle the sauce over the stuffed pork chops.
Garnish with the minced Italian parsley and any remaining pancetta.
Serve immediately