Mayonnaise can easily replace egg wash because it contains the three essential ingredients for creating the perfect crispy chicken: fat, protein, and sugar.
Start by soaking the chicken in a marinade, like buttermilk. Then, slather mayonnaise on each piece without dunking the knife back in the container to avoid cross-contamination.
If you want to forego the breadcrumbs, dip the chicken into seasoned flour or cornstarch, but make sure you season the marinade well to ensure the best flavor.