In a large bowl, combine the Romaine, chicken and Parmesan cheese. Add the Caesar dressing and toss until well coated. Stir in the crushed croutons, if using.
Arrange the tortillas on your work surface. Divide the chicken Caesar mixture among the tortillas, arranging it in the center of each.
Fold the sides of each tortilla inward over the filling, then, starting at the bottom, roll it up tightly.
Slice the wraps in half and serve immediately with additional Caesar dressing for dipping, if desired.