Creating the Crispy Chicken Caesar Sandwich can be easy if you follow these steps:

1. Marinate the Chicken: Place the chicken breasts in a bowl and cover with buttermilk. Let them marinate for at least 30 minutes to tenderize and add flavor.
2. Prepare the Coating: In a shallow dish, combine the flour, garlic powder, onion powder, paprika, salt, and pepper. Mix well.
3. Breading Process: In another bowl, place the breadcrumbs. Remove the chicken from the marinade, allowing excess buttermilk to drip off, then dredge each piece in the flour mixture, coating thoroughly. Shake off the excess flour, then dip in the breadcrumbs to fully coat.
4. Preheat Oil: In a large skillet, heat oil over medium heat. You want enough oil to cover the bottom of the pan.
5. Cook the Chicken: Once the oil is hot, carefully add the breaded chicken pieces. Cook for 5-7 minutes on each side or until golden and cooked through. Remove and place on a paper towel-lined plate to absorb excess oil.
6. Assemble the Sandwich: Cut the sandwich rolls in half. On the bottom half, layer with chopped romaine and drizzle with Caesar dressing.
7. Add Chicken: Place the crispy chicken on top of the dressed lettuce. Sprinkle grated Parmesan cheese over the chicken.
8. Finish It Off: Top with the other half of the sandwich roll. Press down gently to help the ingredients hold together.
9. Optional Toasting: If you prefer, you can toast the assembled sandwiches in a skillet for an additional minute until the outside of the rolls is crispy.
10. Serve: Cut the sandwiches in half and serve immediately.

These straightforward steps will guide you to achieving the ultimate Crispy Chicken Caesar Sandwich that everyone will crave!