Preheat the oven to 350°F (180°C). Line a baking sheet with aluminum foil.
Remove the stem and seeds from each of the peppers. Fill the peppers with pulled pork mixture, top with cherry tomatoes and diced onion, season with salt and pepper and sprinkle over the cheese.
Place the baking sheet into the hot oven and bake the peppers for 20 to 25 minutes, or until the cheese is golden. Sprinkle with parsley and serve.
