Feeding from your hand is seen as a treat and part of a bonding process, it is why many dogs with poor appetites or not fancying their given food, will still feed from the hand.
It probably is nothing to do with the bowl, but the fact he does not fancy the food, well....I'd prefer chicken and rice.

Put his normal food in his bowl with maybe a poached egg on top or something with a foody smell.
Otherwise you will have to feed him from your hand until he gives in, I generally, just prop myself down in a nice comfy chair and feed in comfort, you may even get away with feeding half and then putting the rest in the bowl and he will continue himself, he may just want to feel close to you, if he still feels a little unwell.........
As long as he is eating either way, I wouldn't worry.