In a large mixing bowl, combine the shredded chicken, Caesar dressing, Parmesan cheese, black pepper, and garlic powder. Mix until the chicken is well coated.
Heat olive oil in a skillet over medium heat. Add the chicken mixture and cook for about 5 minutes, stirring occasionally, until heated through.
While the chicken is heating, warm the tortillas in a separate pan or microwave until soft and pliable.
To assemble the tacos, place a generous scoop of the chicken mixture onto each tortilla. Top with chopped romaine lettuce and halved cherry tomatoes.
Garnish with fresh parsley and additional Parmesan cheese if desired. Serve immediately.
