Steps
1. Season the chicken breast with salt and pepper.
2. Set up a breading station: place flour in one bowl, beaten egg in another, and breadcrumbs in a third.
3. Dip the chicken in flour, then in the egg, and finally coat it with breadcrumbs.
4. Heat oil in a pan over medium heat and fry the chicken for about 5-7 minutes on each side until golden brown.
5. While the chicken is cooking, mix mayonnaise and mustard in a small bowl for the sauce.
6. Toast the burger bun lightly.
7. Assemble the sandwich: spread the sauce on the bun, add the fried chicken, and top with pickle slices.
8. Serve with a side of extra pickles if desired.