Preheat griddle on low.
While the griddle is heating, prepare the potatoes by cutting each potato in half. Scoop out the halved potatoes with a spoon, leaving about 1/4" to 1/2" of flesh all the way around the inside of the skin.
Heat the cooked pulled pork on the griddle until warmed through. Then remove from the griddle and set aside.
Add about 1-2 tablespoons of cooking oil or beef tallow to the griddle surface. Place the prepared potato skins flesh side down in the oil. Using a press, gently smash each potato skin on the griddle until it's evenly flat and about 1/2" thick. Press down on each potato skin for about 10 seconds.
Allow the smashed potatoes to cook on the first side for about 5 minutes, or until golden brown and slightly crispy. Then add a bit more oil or beef tallow to the griddle surface and flip the smashed potatoes to the second side in the fresh oil.
Sprinkle the flesh side (top) of each smashed skin with your favorite barbecue or all-purpose seasoning. Top each potato skin with shredded cheese and a light drizzle of barbecue sauce. Add about 1/8 of the pulled pork on each potato skin, and top with another light sprinkle of cheese, a light drizzle of barbecue sauce, and some chopped bacon.
Continue to cook the smashed potato skins until the cheese is melted. You may need to add a squirt of water to the griddle and dome the potato skins to help the cheese to melt.
When the smashed potato skins are done, transfer to a serving platter. Top with sour cream, hot sauce, diced jalapeños, or your favorite potato skin toppings. Serve warm.