Heat a large skillet over medium heat, and add about 2 tsp olive oil, then chicken.
Cook until chicken is done, transfer to a plate to cool. Slice in strips for gyros.
Creamy Dill Ranch Sauce
Place dill, garlic, and cucumber in a food processor, and mix on high until finely chopped.
Place in a medium mixing bowl, and add other ingredients mixing well.
Use foil to wrap the gyro, having the foil cover half of the wrap. Place chicken down the center, and drizzle the sauce, then top with lettuce, tomato, and onions if desired. Roll up sealing the end with foil, and enjoy!