Pre-heat oven to 200°C.
Using a cast-iron pan or other oven-safe dish, assemble the nachos layer by layer by adding the following:
Chips, pork, onion, salsa, and cheese. Repeat as desired for additional layers. Add a final layer of diced tomato.
Bake for 8-10 minutes until cheese is melted and bubbling.
Top with sour cream and coriander.