Preheat your oven to 375°F. Warm the pulled pork in a skillet over medium heat or in the microwave until heated through, about 2-3 minutes. If the pork is dry, add a splash of water or barbecue sauce.
Line a large baking sheet with aluminum foil for easy cleanup.
Arrange the tortilla chips in a single layer on the prepared sheet pan, slightly overlapping but not stacked.
Dollop the refried beans over the chips, spreading them out evenly. Sprinkle half of the shredded cheese over the beans.
Scatter the warmed pulled pork over the cheese, then top with the remaining shredded cheese.
Bake for 5-7 minutes or until the cheese is fully melted and bubbly.
Remove from the oven and immediately top with jalapeños, chopped tomatoes, guacamole or sliced avocado, sour cream, and fresh cilantro if desired.
Serve immediately while the cheese is hot, and the chips are still crispy.