Bring a large pot of salted water to a boil. Add the penne pasta and cook according to package instructions until al dente.

Drain the pasta in a colander and rinse under cold water to cool.

In a large mixing bowl, combine the cooked pasta, shredded chicken, chopped romaine, cherry tomatoes, and red onion.

Pour the Caesar dressing over the salad and toss gently to combine.

Add grated parmesan cheese and black pepper, mixing well.

Transfer the salad to a serving platter or individual bowls.

Top with croutons and chopped parsley, if desired. Serve immediately.