Preheat a skillet over medium high heat.
Combine lettuce, carrots and celery in a salad bowl.
Combine ranch dressing and blue cheese crumbles in a small bowl.
Add oil and butter to hot pan with the chicken.
Season with salt and pepper and sear for 2 or 3 minutes, then add hot sauce.
Reduce heat a little and cook 5 minutes more.
Toss salad with dressing and season with salt and pepper.
Top salad with Buffalo chicken and serve.