In a zip lock bag or large bowl, combine the taco seasoning, lime juice and chicken thighs.
In a large frypan, heat the garlic-infused olive oil over medium heat. Add the chicken to the pan and cook for 7 minutes on each side or until cooked through.
Remove the chicken from the pan, leave it to cool for 5 minutes, then slice thinly and set aside.
In a small bowl, combine the diced tomato, jalapeno, cilantro (cilantro) and lime juice.
Char the tortillas on the stovetop over a gas flame or heat them in a microwave or dry frypan.
Divide the chicken among the tortillas and top with lettuce, tomato mixture, cheese and sour cream.