Kaliro wants nothing more than to fit in with his human/humanoid peers, but even simple things like eating are a huge mental and physical barrier for him. He doesn’t have the anatomy or dexterity to pick up and eat off a fork, let alone use both hands to cut and eat food, and it only serves to remind him how much of a beast he really is.
He eats in private as he finds the whole “sticking your face down to your meal” quite embarrassing after spending so much time with people using cutlery.
He has social anxiety you haven’t even dreamed of.
Tevruden can empathize. He hates having to stick his face in his meal in dragon form. Almost as much as he hates being forced to walk on all fours around humanoids.