Creating your own Crispy Chicken Caesar Sandwich is straightforward. Follow these simple steps:

1. Marinate Chicken: In a bowl, combine the chicken breasts and buttermilk. Let them marinate for at least 30 minutes, or up to overnight if possible, in the refrigerator.
2. Prepare Breading Station: Set up three bowls: one with flour, one with breadcrumbs, and in the third, combine garlic powder, onion powder, salt, and black pepper.
3. Bread the Chicken: Remove the chicken from the buttermilk, allowing excess to drip off. Dredge each piece in flour, then the seasoned breadcrumbs, ensuring they are well coated.
4. Heat the Oil: In a large skillet, heat olive oil over medium heat. You’ll need enough oil to cover the bottom of the pan effectively.
5. Fry the Chicken: Once the oil is hot, carefully add the breaded chicken. Cook for 5-7 minutes on each side, or until golden brown and cooked through. Use a meat thermometer to ensure they reach an internal temperature of 165°F (74°C).
6. Drain Chicken: Remove the chicken and place it on a paper towel-lined plate to drain excess oil.
7. Prepare the Buns: While the chicken is cooling, lightly toast the ciabatta or burger buns in the same pan for added flavor.
8. Assemble the Sandwich: Spread Caesar dressing on the bottom half of each bun. Layer with crispy chicken, chopped romaine, and sprinkle with grated Parmesan cheese. Top with the other half of the bun.
9. Serve Immediately: Cut the sandwiches in half for easier handling and serve while the chicken is still warm for the best experience.

By adhering to this simple yet effective process, you will create a mouthwatering Crispy Chicken Caesar Sandwich to enjoy at any time.