Creating your Crispy Chicken Caesar Sandwich is a straightforward process with these simple steps:

1. Prepare Chicken: In a bowl, marinate the chicken breasts in buttermilk for at least 30 minutes.
2. Set Up Breading Station: Prepare three shallow dishes: one with flour, another with beaten eggs, and the third with breadcrumbs mixed with garlic powder, onion powder, paprika, salt, and pepper.
3. Bread the Chicken: Remove the chicken from the buttermilk. Dredge each breast in flour, dip in the egg, and coat with the breadcrumb mixture.
4. Heat Oil: In a large skillet, heat olive oil over medium-high heat.
5. Fry Chicken: Cook the chicken for 5-7 minutes per side, or until golden brown and cooked through. Remove from skillet and drain on paper towels.
6. Toast Buns: Lightly toast the sandwich buns in the skillet or oven until golden.
7. Assemble Sandwich: Spread Caesar dressing on the bottom half of each bun. Layer with crispy chicken, then add chopped Romaine lettuce and a sprinkle of Parmesan cheese.
8. Finish Up: Top the sandwich with the other bun half and serve immediately!

Following these steps will lead you to a wonderful culinary experience and a delicious meal.