In a bowl or large ziplock bag, place the pieces of chicken, buttermilk, hot sauce and pickle juice. Marinate over night or at least 30mins.
In a shallow plate mix together flour, salt +pepper, smoked paprika and set aside. Whisk eggs in a shallow bowl, add salt + pepper and set aside.
Remove chicken from buttermilk mixture, letting excess drip off. Place chicken in flour mixture, turning to coat, then into the egg mixture and followed by the flour mixture one last time.
Fry chicken in the hot oil, turning occasionally, until golden brown about 3-5 minutes per side. Transfer to a plate lined with paper towels to drain.
Toast the buns, add mayonnaise to each side followed by slice of cheese, lettuce tomato, onion and the chicken breast. Enjoy