01 - If chicken breasts are thick, place between plastic wrap and gently pound to an even 1/2-inch thickness using a meat mallet.
02 - In a large bowl, whisk together the buttermilk, egg, salt, black pepper, garlic powder, and paprika until well combined.
03 - Submerge chicken breasts in the marinade, cover, and refrigerate for at least 30 minutes or up to 4 hours for deeper flavor penetration.
04 - In a shallow dish, combine the flour, breadcrumbs, salt, smoked paprika, and cayenne pepper. Remove chicken from marinade, letting excess drip off.
05 - Dredge each chicken breast in the flour-breadcrumb mixture, pressing firmly on all sides to ensure an even, adherent coating.
06 - Pour vegetable oil into a large skillet and heat over medium-high until it reaches 350°F. The oil should shimmer slightly when ready.
07 - Carefully place breaded chicken into the hot oil and fry for 5 to 7 minutes per side until golden brown and crispy. Internal temperature should reach 165°F.
08 - Transfer fried chicken to a paper towel-lined plate to drain. Let rest 2 to 3 minutes before serving to allow juices to redistribute.