Marinate the chicken breasts in yogurt and spices for at least two hours.
Sprinkle smoked paprika, salt, and black pepper over the crushed corn flakes and add 3 tablespoons of flour.
Dip the breasts in the corn flake mixture, then in the marinade — 3 times.
Spray the breasts with vegetable oil and place them in the air fryer for 20–25 minutes, flipping them onto the other side halfway through.
Toast the sourdough bread with butter in a medium-heat pan (optional).
Spread a generous amount of German sauce on a slice of sourdough bread, then add the coleslaw, followed by the chicken breast, the cheese, and the coleslaw.