Greek Pork Pitas

Ingredients:
1 Pink Lady Pork Tenderloin
1 cup Ingrid's Herb Salad Dressing
1 tsp Salt
1 tsp Pepper
1 Tbsp Oregano
1 cup Crumbled Feta Cheese
1 cup Tzatziki
1 Bell Pepper (Red or Yellow)
2 cups Romaine Heart Lettuce
1/2 Cucumber
1/2 Red Onion
5 Greek Pitas