Place ranch dressing in a resealable plastic bag. Add chicken tenderloins. ensuring all the chicken is covered with dressing and seal bag. Refrigerate at least 4 hours or overnight.
Preheat oven to 200ยบ. In a 10 to 12-inch cast-iron pan, heat oil over medium to high heat. Add chicken; cook until golden brown and cooked through, 4 to 6 minutes per side.
Transfer chicken to a baking sheet and place in preheated oven.
For Slaw
In a small bowl, whisk together lime juice, mayonnaise, sour cream, honey, vinegar and salt.
In a larger bowl, combine cabbage and cilantro. Add dressing; toss to combine.
Serve chicken and slaw with tortillas and toppings of choice (using taco holders, optional)