In a medium mixing bowl, combine shredded or chopped cooked chicken breast with Caesar dressing, grated Parmesan cheese, and chopped romaine lettuce. Stir everything together until well combined.

On a clean flat surface, lay out a large flour tortilla. Spoon approximately one-quarter of the chicken Caesar mixture down the center of the tortilla.

Begin the wrapping process by gently folding the sides of the tortilla inward, then roll the tortilla tightly from the bottom up.

Place the wrap seam-side down on the cutting board, and slice it in half diagonally.

Serve immediately or wrap leftovers tightly in plastic wrap to keep them fresh.