Place the chicken breast between sheets of plastic wrap and gently flatten until it is about half an inch thick.
Slice the chicken into two or three evenly sized pieces.
Soak the chicken pieces in dill pickle juice and let them marinate for 30 minutes to an hour.
In a bowl, whisk together the egg and milk until smooth.
In another bowl, mix flour with powdered sugar, paprika, salt, black pepper, garlic powder, celery salt, dried basil, and cayenne.
Dip each piece of chicken first into the egg mixture coating both sides, then dredge thoroughly in the seasoned flour blend.
Heat the oil in a skillet to around 345-350 degrees Fahrenheit, making sure it is about half an inch deep.
Fry each chicken piece for approximately 2 minutes on each side, or until the exterior is golden and chicken is cooked through.
Transfer the cooked chicken to a plate lined with paper towels and gently blot to eliminate excess oil.
Serve the chicken on lightly toasted buns with slices of pickles for the perfect homemade Chick Fil A sandwich experience.