Chicken Gyro

1 lb sliced chicken fajita meat
Tzatziki sauce
purple onion sliced
tomato sliced 
Naan bread (or pita)
feta cheese (optional)

Saute chicken fajita until heated through. Remove from skillet and set aside. Place Naan bread or pita in skillet and heat slightly; flipping bread once per side. Remove and place bread on a piece of foil. On the middle area of each Naan bread or pita place about a Tablespoon of Tzatziki sauce, spread slightly. Layer onion, chicken and tomato. Sprinkle with feta cheese if using. Spoon more tzatziki on top of layered ingredients. Carefully fold Naan or pita wrapping foil around gyro to hold it together. Serve warm.