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Step-by-step instructions.
Heat the pork
Preheat the oven or smoker to 375°F. Warm refrigerated pulled pork in a covered skillet with a splash of water until it reaches 165°F. Stir in BBQ sauce. Freshly cooked hot pork can go straight into assembly.
Build a shallow layer
Spread half the chips on a large rimmed sheet pan. Add half the cheese and pork, then repeat. Keep the layers shallow so the chips in the center get toppings without becoming soggy.
Melt the cheese
Bake or smoke 8–12 minutes, just until the cheese melts and the edges are hot. Watch closely so the exposed chips do not burn.
Finish fresh
Top with tomatoes, onion, guacamole, sour cream, jalapeño, and cilantro. Serve immediately with lime wedges. Add cool toppings only after the pan leaves the heat.
Reheated pulled pork must reach 165°F before assembling. Check the thickest part with a thermometer, away from bone or the hot pan.
USDA temperature guidance

