Follow these simple steps to create your Crispy Chicken Caesar Sandwich:

1. Marinate the Chicken: Place the chicken breasts in a bowl and cover them with buttermilk. Allow them to marinate for at least 30 minutes (or up to overnight for more flavor).

2. Prepare the Breading: In a shallow dish, combine the flour, garlic powder, onion powder, paprika, salt, and pepper.

3. Coat the Chicken: Remove the chicken from the buttermilk, allowing excess to drip off. Dredge each piece in the flour mixture until fully coated.

4. Heat the Oil: In a large skillet, heat enough oil over medium-high heat for frying.

5. Fry the Chicken: Look for the oil to shimmer before gently adding the chicken. Cook for 6-8 minutes on each side or until golden brown and cooked through. The internal temperature should reach 165°F (75°C).

6. Transfer to a Paper Towel: Once cooked, transfer the chicken to a paper towel-lined plate to drain any excess oil.

7. Toast the Bread: In the same skillet (remove excess oil if necessary), toast the bread slices until golden brown on both sides.

8. Assemble the Sandwich: Spread Caesar dressing on both sides of the toasted bread. Layer the chopped romaine, followed by the crispy chicken.

9. Top with Cheese: Sprinkle grated Parmesan cheese on top for extra flavor.

10. Finish and Serve: Top with the other slice of bread and slice the sandwich in half. Serve hot with lemon wedges on the side.