In this Abc News interview he doesn't look healthy to me ..his skin looks weird even with tons of lighting their using.
Since very few people are measured and as fit as he is, it's not strange that we think he looks strange. But mostly I think it's lightning and makeup giving him this unnatural look.
Many looking healthy things are literally just your body functioning correctly.
However a lot of more subtle things like soft, shiny hair or good skin are correlated with nutrition.
This is only a thought and an opinion based on how I think he looks which looks not healthy to me, but again only an opinion. Time will tell!