My GTP is a really good boy.....during the day.
At night he is open to bite anything and everything that he can.
I have sliding glass doors on his cage so during feeding I slide it open just enough to reach the tongs through and use the glass as a shield for my hand. Sometimes he is already at the door and ready to strike so I distract him by getting him to check out the shadow of my hand on his cage ceiling using my feeding head lamp. This gives me the room I need to get his food through the door without getting tagged.
Anybody that tries to move a GTP or ETB in feed mode probably should not own one. They are somewhat fragile and can be very aggressive. Moving them takes a special touch but trying to do that while they are ready to eat is just ignorant.
Get you a set of long tongs and you will be fine.