Salt and pepper pork roast.
Brown roast on all sides.
Place in a slow cooker and pour BBQ sauce to cover.
Simmer on low for 8 hours or on high for 4 hours.
Preheat oven to 350 degrees Fahrenheit.
While the oven is preheating, shred BBQ pork with two forks.
Mix instant mashed potatoes according to package instructions.
Layer mashed potatoes evenly at the bottom of a 9x9 casserole dish.
Add one-third of the cheese in a layer on top of the mashed potatoes.
Add about two cups of the pulled pork in a single layer in the casserole dish. (Can use more if desired.)
Top the casserole with a mixture of the remaining cheese and the crushed BBQ Pringles.
Bake casserole for about 12-15 minutes or until cheese is bubbling.