Preheat skillet to medium high heat.
Prepare QuickSteak® Chicken Breast, adding the taco seasoning, the QuickSteak Wow!® Seasoning, and diced onion. Add water while cooking, and green chilies (if desired).
Warm taco shells in oven as directed.
Spoon chicken mixture into warmed taco shells.
Top with lettuce, diced tomatoes, and shredded cheese