וְאִם־פָּשֹׂ֨ה תִפְשֶׂ֤ה הַמִּסְפַּ֙חַת֙ בָּע֔וֹר אַחֲרֵ֧י הֵרָאֹת֛וֹ אֶל־הַכֹּהֵ֖ן לְטָהֳרָת֑וֹ וְנִרְאָ֥ה שֵׁנִ֖ית אֶל־הַכֹּהֵֽן׃
But if the scab spread abroad in the skin, after that he hath shown himself to the priest for his cleansing, he shall show himself to the priest again.
Daat Zkenim on Leviticus
ונראה שנית, “and he is to be seen by the priest a second time.” The Torah should have written: “a third time,” as the priest had already seen that person twice.
Chizkuni
ואם פשה תפשה אחרי הראותו, “but if the scab spread after he had shown it to the priest, even immediately;