Drizzle each clam with some of the bacon drippings for extra flavor. Spoon bacon and bell pepper mixture over the top of each clam, distributing evenly. Spoon the breadcrumb mixture on top of each clam, and gently pack it down a bit with the back of the spoon or your hands.Mix together in a bowl the panko breadcrumbs, butter, garlic, 2 tablespoons of the chopped parsley, Parmigiano-Reggiano, Worcestershire sauce, wine, the juice of ½ the lemon, sea salt, and ground pepper.Transfer the bacon and peppers to a bowl using a slotted spoon. Add the diced bell pepper and shallot, and sauté for 2 minutes.
Sauté the bacon for about 10 minutes, stirring occasionally, or until it is beginning to get crispy edges. Try to reserve as much of the juices in the shell as possible. Twist the knife to pry open the shell, and twist off the top of the shell using your hands. Remove from the oven, and allow them to cool enough to handle.
Dry the clams, then spread them on a baking sheet. Remove the clams from the water, taking care to not lift up the sand that has collected in the bottom of the bowl. Scrub the clams well, then let them sit in the bowl for 30 minutes.
