Place Pork and peppers in a gallon size bag and add dressing.
Marinate at room temperature for 15 - 30 min.
While pork marinates, heat the grill to medium high.
Thread 3 pieces of pepper and 2 slices of pork onto each of 4 skewers.
Place skewers on the grill and cook until pork is done, about 10 minutes.
Serve with wilted lettuce