Creating a Crispy Chicken Caesar Sandwich is straightforward if you follow these steps:

1. Marinate Chicken: Place the chicken breasts in a bowl with buttermilk. Let it marinate for at least 30 minutes. This will help tenderize the meat.
2. Prepare Coating: In a shallow dish, mix together flour, garlic powder, salt, and black pepper.
3. Heat Oil: In a large skillet, heat olive oil over medium-high heat for frying the chicken.
4. Coat Chicken: Remove chicken from buttermilk; allow excess to drip off. Dredge in the flour mixture, ensuring a good coating.
5. Fry Chicken: Carefully place chicken breasts in the hot oil and fry until golden and crispy, about 6-7 minutes per side. Ensure the chicken is cooked through (internal temperature of 165°F).
6. Toast Bread: In another skillet or toaster, lightly toast the slices of bread until golden brown.
7. Assemble the Sandwich: On one slice of toasted bread, spread a generous amount of Caesar dressing. Layer with crispy chicken, chopped romaine lettuce, and grated Parmesan cheese. Top with the second slice of bread.
8. Serve: Cut the sandwich in half for easier handling and serve immediately.

These steps will guide you in creating this incredible sandwich effortlessly while ensuring great results.