Preheat your oven to 375°F (190°C).
Season the chicken breasts with salt and pepper.
Heat olive oil in a skillet over medium heat.
Cook the chicken for about 5-7 minutes on each side until golden brown.
Remove the chicken from the skillet and let it rest for a few minutes.
Slice the cooked chicken into thin strips.
Toss the chicken strips in buffalo sauce until well coated.
Toast the sandwich rolls in the oven until lightly crispy.
Assemble the sandwiches by layering lettuce, chicken, and ranch dressing.
Serve with celery sticks on the side.