My first thought was articular gout. This has several causes, too much calcium can be one which can happen if he's been being fed a layer feed. Article attached:
http://www.poultrydvm.com/condition/gout
The one toe on his right foot looks like it may have a lesion, so wondering if he's got some bumblefoot going on too. I would do some epsom salt soaks, and clean up any of those lesions you may find.
https://www.tillysnest.com/2015/12/non-surgical-bumblefoot-treatment.html/?spref=pi
I would go ahead and trim his spurs, they are rather long and it can contribute to difficulty walking and it raised the risk of him getting leg or foot injuries.
https://blog.cacklehatchery.com/how-to-trim-a-roosters-spurs-and-how-not-to/
Lastly, his leg and feet scales look a little raised and dry, so I would go ahead and oil them regularly, to make sure he's not got an early case of scaly leg mites going.
I use castor oil, you can use any vegetable oil, vaseline, some use nu stock ointment.
https://the-chicken-chick.com/scaly-leg-mites-in-chickens/