Place the flour in a ziploc bag. Sprinkle salt & pepper to season. Beat 2 eggs in a bowl. Place some panko bread crumbs in a separate bowl/plate(might have to repeat this process depending how many pieces of chicken you're cooking).
Slice the boneless chicken breasts in half. Pound with a meat mallet to tenderize.
Do this in batches. Coat chicken pieces, one at a time, with flour, dip in the beaten egg, then coat with the Panko Bread Crumbs.
Set them in a platter until ready to pan-fry.
Heat up oil in a pan. Fry 3-5 minutes each side.
Do not overcrowd.
Repeat process with the rest.