Daniel Vargas fixed this for a big party in Sisal years ago. It's delicious and, once you've chopped everything, really easy.
1 lb onions, chopped
1 lb green or red peppers, chopped
1 1b bacon, chopped
2 lb pork tenderloin, chopped
1 lb manchego cheese, shredded
salt & pepper to taste
In a large skillet saute the bacon until it's mostly cooked. Add onions and peppers and cook until onions are translucent. Add the pork tenderloin, salt & pepper, and cook until pork is no longer pink. Add the manchego cheese to the top and let melt without stirring.
Serve in flour tortillas with fresh salsa.