In a large bowl, combine the shredded chicken, corn, black beans, cherry tomatoes, bell pepper, and cheddar cheese.
In a smaller bowl, whisk together the BBQ sauce and ranch dressing until smooth and well blended.
Drizzle the dressing over the chicken and vegetable mixture, then gently fold everything together to ensure an even coating.
Adjust the seasoning with salt and pepper to your liking.
To serve, create a base with the chopped romaine lettuce in individual bowls and top with the chicken mixture.
If desired, sprinkle fresh cilantro on top for an added burst of flavor.