Creating the Crispy Chicken Caesar Sandwich is straightforward. Follow these steps to enjoy your amazing sandwich:

1. Marinate Chicken: In a bowl, soak the chicken breasts in buttermilk for at least 30 minutes. This will tenderize the meat and add flavor.

2. Prepare Dredging Mixture: In a shallow dish, combine flour, garlic powder, onion powder, paprika, salt, and pepper. Mix well.

3. Prepare Panko Coating: In another shallow dish, place panko breadcrumbs.

4. Dredge Chicken: Remove the chicken from the buttermilk and let the excess drip off. Coat each piece in the flour mixture, ensuring even coverage, then dip into the panko breadcrumbs for a crispy coating.

5. Heat Oil: In a large skillet over medium heat, add olive oil. Once hot, carefully add the chicken breasts. Cook for 5-7 minutes on each side, or until golden brown and cooked through.

6. Toast Bread: While the chicken is cooking, toast the ciabatta or baguette slices lightly in another skillet or a toaster.

7. Assemble Sandwich: On the bottom half of each toasted bread slice, add chopped romaine lettuce and drizzle with Caesar dressing. Place the crispy chicken on top, followed by grated Parmesan cheese.

8. Finish the Sandwich: Add freshly cracked black pepper to taste, then top with the other half of the bread.

9. Serve: Slice each sandwich in half and serve immediately, while the chicken is hot and crispy.