I would honestly just stop handling him for about a month, and then go and see if his temperament's improved. At the moment, you're just reinforcing his behavior--the same trigger every day is getting the same responses from him--he's 'practicing' aggression. It's becoming a habit. You need to avoid riling him up at all for a while.
Hatchlings normally calm down around 2 or 3 months of age. Your guy is still very young, and it's not uncommon for young hatchlings to be snappy and defensive.