1. 1. Prepare Chicken: Slice each chicken breast in half horizontally to create four thinner cutlets. Pat them dry with paper towels.

2. 2. Set Up Breading Station: In one shallow dish, combine flour, cornstarch, paprika, garlic powder, salt, and pepper. In a second dish, whisk eggs and milk. In a third dish, place panko breadcrumbs.

3. 3. Bread Chicken: Dredge each chicken cutlet first in the flour mixture, shaking off excess. Then dip it into the egg mixture, allowing excess to drip off. Finally, coat thoroughly in panko breadcrumbs, pressing gently to adhere. This ensures perfectly crispy buffalo chicken.

4. 4. Fry Chicken: Heat vegetable oil in a large skillet over medium-high heat to about 350°F (175°C). Carefully place breaded chicken into the hot oil, ensuring not to overcrowd the pan. Fry for 4-6 minutes per side, or until golden brown and cooked through (internal temperature reaches 165°F/74°C). Transfer chicken to a wire rack set over paper towels to drain excess oil.

5. 5. Make Buffalo Sauce: In a small bowl, whisk together buffalo sauce and melted butter.

6. 6. Sauce Chicken: Toss the crispy chicken cutlets in the buffalo sauce mixture until evenly coated. Each of your Crispy Buffalo Chicken Sandwiches deserves this perfect coating.

7. 7. Assemble Sandwiches: Lightly toast the hamburger buns. Place a sauced chicken cutlet on the bottom bun. Top with desired toppings like lettuce, tomato, pickles, and a generous drizzle of ranch or blue cheese dressing. Finish with the top bun.

8. 8. Serve: Enjoy your mouthwatering Crispy Buffalo Chicken Sandwiches immediately!