1Slice leftover pork into small strips,then set aside.
2Cut pepper and onion into small strips.
3Heat oil. After oil heated, saute peppers and onions until still slightly browned.
4Add pork to the onions and peppers just until pork is warm. Then transfer all to a plate and set to side.
5Heat large skillet on med to med high. Take tortilla shell and spray 1 side with cooking spray. Lay half of shell on pan. Add 1/4 of meat mixture on shell. Pour desired amount of BBQ sauce over mixture, then add 1/4 of cheese. Fold other half shell over and heat until shell slightly browned. Flip over and brown other side. Repeat until all 4 quesedillas are done.