Will his apparent recessive white gene ever show up in his offspring?

[Slothinc]

That said recessive whites can carry dominant white but I just took you at your word that he is recessive white.

There is no possible way for this chicken to be dominant white, as the mom is my olive egger (my only hen who lays an olive egg, which is what this chick hatched out of.) She is black with a copper neck. And the father has to be a NN black silkie - otherwise the chick could not have had the NN gene. Both of those parents do carry recessive white. I had another cockerel at the time that was dominant white but no NN, so he can’t be the father.