Chicken:Place the sliced chicken in a large ziplock bag. Add the rest of the ingredients and mix well. Marinate overnight. Cook chicken in a large non-stick pan for 15 minutes or until marinade has evaporated.You can also grill this chicken for more authentic gyro flavor.Tzatziki Sauce:Prepare the sauce the same day of meal. Let the sauce sit in fridge an hour before the meal.Assembly:Add 4-5 pieces of chicken to the low-carb tortilla. Add 1-2 tomatoes and 1/4 cup shredded lettuce. Top with 2-3 Tablespoons of Tangy Tatziki Sauce.