Has his eye colors changed at all since the pic? My guy can sometimes edge his cask very dark like Chester is but I have not noticed his eyes doing the same. I want to say he looks ok but my Cham mom gut doesn’t like his body colors being so pastel either. Hopefully someone else chimes in with more experience. I’m not familiar with sickness. hoping nothing serious and it’s just a winter funk.
Not sure about his eyes, but turning pastel is a somewhat common thing for some panthers. It usually lasts a couple of months. Has something to do with their mating/winter cycles. I’d saw just to monitor for other changes/signs of decline.