Start by preparing your chicken. Wash and pat dry thoroughly. Cut chicken into even thin strips or chunks that are fairly similar in thickness.
In a bowl mix together chicken with all the "Chicken" ingredients. Mix thoroughly so they are coated. Cover the bowl and allow to marinate in refrigerator for 30-40 minutes.
Once marinated it is time to cook the chicken. In a large cast iron pan or stainless steel skillet heat up enough oil to lightly coat the pan. Heat up on medium heat. Once oil is hot add in enough chicken to fill pan. Allow to cook for about 5 minutes per side or until you see it is seared (not burned). If you have larger chunks keep them in the pan longer and cover pan to trap heat. Cook them for a few more minutes until cook through.
Cook the remaining chicken in the same way, should take about 2-3 batches depending on size of pan.
Once chicken is cooked place on cutting board to rest for 2-3 minutes. Once rested, chop chicken into small strips.
Put all the chicken in one place so it is easy to assemble. I recommend assembling at the table so each taco is fresh and warm.
Make taco sauce by combining all taco sauce ingredients in a bowl.
To assemble, taco one tortilla place a bed of lettuce, add guacamole on top, then place chicken on top, and lastly put taco sauce. Garnish with cilantro and sprinkle with fresh lime juice, if you please.
Enjoy!