Cook the pasta according to package instructions. Drain and rinse with cold water to cool it down quickly.
In a large bowl, combine the cooled pasta, diced chicken, chopped romaine, and Parmesan cheese.
Add the Caesar dressing and toss everything together until well coated. Season with salt, pepper, and a squeeze of lemon juice if you like.
Just before serving, sprinkle in the croutons for that classic crunch.
Serve immediately and enjoy!