Cook and shred your chicken. I always throw it into the crockpot with some chicken broth and let it slow cook all day. Then I will drain the juices and shred it. Once you shred your chicken, add the 2 cups of BBQ sauce to the chicken. Set aside until ready to use.
If you are making the salad dressing, whisk together the mayonnaise, buttermilk, chopped cilantro, lime juice, white vinegar, sugar, garlic, salt, cayenne pepper, black pepper, cumin and BBQ sauce. Set aside until ready to use.
In a large bowl, toss the romaine, red onion, cilantro, corn, and black beans. You can either add about 1/2 cup of the salad dressing to this, or serve it on the side.
Top salad with the cheese and tortilla strips. Enjoy!