Tertullian was actually apparently sort of big about Jesus being unattractive, because he believed that it is the fufillment of Isaiah’s prophecy.
Let us compare with Scripture the rest of His dispensation. Whatever that poor despised body may be, because it was an object of touch and sight, it shall be my Christ, be He inglorious, be He ignoble, be He dishonoured; for such was it announced that He should be, both in bodily condition and aspect. Isaiah comes to our help again: “We have announced (His way) before Him,” says he; “He is like a servant, like a root in a dry ground; He has no form nor comeliness; we saw Him, and He had neither form nor beauty; but His form was despised, marred above all men.” Similarly the Father addressed the Son just before: “Inasmuch as many will be astonished at You, so also will Your beauty be without glory from men.” (Isaiah 52:14) For although, in David’s words, He is fairer than the children of men, yet it is in that figurative state of spiritual grace, when He is girded with the sword of the Spirit, which is verily His form, and beauty, and glory. According to the same prophet, however, He is in bodily condition “a very worm, and no man; a reproach of men, and an outcast of the people.”
Jesus is Jesus and will be Jesus, whether He was actually a tall, physically fit person who looks like Robert Powell or Jim Caviezel or Johnny Depp or whatever or He was actually a short, stocky guy with a receding hairline 2000 years ago.