In a medium bowl, combine the ground chicken, salt, black pepper, garlic powder, and onion powder. Mix until the seasonings are evenly incorporated.
Divide the chicken mixture among the tortillas. Spread a thin, even layer of chicken over one side of each tortilla, pressing it firmly to help it adhere.
Heat a large skillet or griddle over medium-high heat and lightly coat with oil. Place the tortillas chicken-side down and cook for 3–4 minutes, or until the chicken is cooked through and develops a golden-brown crust.
Flip the tortillas and cook for another 1–2 minutes, until the tortilla is crispy and lightly golden.
In a large bowl, toss the chopped romaine with the Caesar dressing.
Top each taco with the dressed romaine, Parmesan cheese, and crushed croutons.
Fold, serve immediately, and enjoy!