Chuck Norris -- I Can Fight Anything ... Except Aging

The indestructible Chuck Norris has finally met his match ... Father Time.

73-year-old Norris -- sporting a cleanly shaven face -- was spotted out in Hawaii Thursday with his sleeveless t-shirt, sunglasses, and grandpa belly ... actually looking his age for once in his life.

It might not be a roundhouse ... but he's still kickin'.