Khajiit are not the same as humans they should be going nvde in most the games anyways, why should they slow themselves down with stupid human armors?
Actually, the only game where Khajiit could go completely nvde where other races couldn't was Morrowind. In other games, either all races could be naked (Like Daggerfall.) or all races had permanent underwear (Like Obliion.) and really, Khajiit not having underwear in Morrowind never made much sense to me, they still wear clothes, so why would they go without underwear when other races don't? I guess you could justify it for slaves, but I don't expect to see many slaves in Skyrim, now, in Morrowind, they had nothing to cover, but that's just the in-game models, in lore, they're obviously not like that, and if you've ever seen a real cat in your life, you'd probably notice that real cats aren't like that either.
And there's a very good reason why they would want to slow themselves with human armors, because they wear armor for the same reason humans do, to protect themselves in battle, and armor leaving parts of your skin exposed diminishes its protection, because your enemies can aim for those parts, and no matter what race you are, you don't want someone stabbing you in your exposed stomach. Now, a character's race might justify skimpy armor if due to cultural reasons, members of that race have a tendency to go into battle with little or no armor, but that would mostly apply to your stereotypical barbarian warrior race, which might describe Nords, but not so much Khajiit, or if that race is naturally armored and therefore does not need to wear armor, but if that were the case, they wouldn't need armor a all, or would just need to wear it on more vulnerable parts of their bodies, and in any case, I don't think fur will protect you against swords and axes much. Besides, I don't think the armor the Khajiit is wearing is an actual Khajiit design, I'm sure it's armor we'll see other races wearing as well, and I see no reason to assume it will show more skin when other races wear it.
Now, I'm not complaining about the armor in question, it's not a chainmail bikini we're talking about here, that level of skin is something I can accept being shown in armors, and as I've said, not all armor is like that, and I don't expect all armors in the game to be to my liking anyway, if I don't like some armors, I just won't wear those ones, not that I'm saying I have any objection to that armor. I'm simply pointing out that saying the character wearing the armor is a Khajiit doesn't really justify the armor showing skin.