Preheat oven to 400 degrees F. In a large bowl, add barbecue sauce, garlic powder, smoked paprika, salt, pepper and whisk. Add chicken breasts, stir with tongs to coat and let marinate while oven is preheating.
In large 9 x 13 baking dish, add chicken breasts in a single layer and pour remaining sauce on top. Bake uncovered for 25 minutes.
Remove chicken from the oven, cover with foil and let rest for 5-10 minutes. Slice.
Make Ranch Dressing
In a small bowl, add yogurt, vinegar, dill, garlic, onion powder, sugar, salt and pepper. Stir with a fork and set aside.
Assemble the Salad
In a large bowl, add lettuce, black beans, corn, tomatoes, cucumber, cilantro and red onion. Pour dressing on top and gently toss. Place BBQ chicken and tortilla strips on top and serve.
Notes
Make ahead: Refrigerate salad ingredients separately from the dressing covered with plastic wrap for up to 2 days. Dressing in a jar can be refrigerated for up to 2 weeks.