Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Trim fat from chicken breasts, season with salt and pepper, then coat with buffalo sauce.
Bake for 25-30 minutes or until the internal temperature reaches 165°F. Let cool slightly before shredding.
Mix shredded chicken with ranch dressing.
Assemble wraps by layering shredded lettuce, diced tomatoes, and buffalo chicken on tortillas; add blue cheese if desired. Roll tightly and serve warm.