Gather all ingredients and equipment needed for the wraps.
Slice the cooked chicken breasts into thin strips.
Chop the romaine lettuce and prepare the vegetables.
Lay a tortilla flat on a clean surface.
Place a handful of lettuce in the center of the tortilla.
Add sliced chicken on top of the lettuce.
Sprinkle cherry tomatoes, cucumber, and red onion over the chicken.
Drizzle ranch dressing on top.
Season with salt and pepper to taste.
Wrap the tortilla tightly around the filling and enjoy.