01 - Preheat your oven to 400°F (200°C).
02 - In a mixing bowl, gently toss the cooked pulled pork with 1/2 cup of BBQ sauce until it is evenly coated.
03 - Spread the tortilla chips in a uniform layer across a large baking sheet.
04 - Evenly distribute half of the shredded cheddar and Monterey Jack cheeses over the tortilla chips.
05 - Distribute the prepared BBQ pulled pork mixture evenly over the initial cheese layer.
06 - Sprinkle the remaining shredded cheeses over the pulled pork layer.
07 - Place the baking sheet in the preheated oven and bake for 8 to 10 minutes, or until the cheese is fully melted and bubbly.
08 - Remove the nachos from the oven and immediately arrange the sliced jalapeños, red onion, diced tomatoes, chopped cilantro, and optional diced avocado over the melted cheese.
09 - If desired, elegantly drizzle extra BBQ sauce over the assembled nachos.
10 - Serve the BBQ Pulled Pork Nachos hot, accompanied by sour cream and lime wedges on the side.