Place the panko crumbs onto a baking paper lined baking tray. Spray with cooking oil and bake in the oven for approximately 5-10 minutes or until lightly golden (give the tray a shake every few minutes). Set the panko crumbs aside in a bowl to cool.
Place the coated chicken tenderloins onto a non-stick baking tray and bake for 15-17 minutes or until cooked through. Turn the tenderloins over halfway through cooking time so that both sides are crunchy.