Step 1

Place pork, onion, and seasonings into a 6-quart slow cooker.

Step 2

Mix to coat the meat in seasonings.

Step 3

Add ketchup and mustard, spreading evenly over the outside of the meat.

Step 4

Set slow cooker to High and cook for 4 hours, until the meat pulls apart easily. Alternatively, the meat can be cooked on the Low setting for 8 hours.

Step 5

Remove meat from slow cooker and transfer it to a bowl or cutting board.

Step 6

Using two forks, shred the meat into bite-sized pieces.

Step 7

Preheat oven to 400˚F (200˚C). Using a cast-iron pan or another oven-safe dish, assemble the nachos layer by layer. First, add the chips.

Step 8

Then pulled pork and onion.

Step 9

Drizzle BBQ sauce.

Step 10

Top with olives, diced tomatoes, and cheese. Repeat as desired for additional layers.

Step 11

Bake for 8-10 minutes until cheese is melted and bubbling. Top with sour cream, jalapeno, and salsa.