We rescued a siamese blue point kitten from my grandmothers house.  A stray
cat had had kittens on her roof so when we took them out we decided to keep
one.

Since the kitten was wild for about 4 weeks it has picked up a nasty
(although I assume normal) behavior where it will get very aggressive if you
come near it while it is eating.

It is especially bad around food it really likes.  It doesn't seem to have a
problem with our large male cat eating near it however it doesn't offer the
same respect to us humans.

He/she (too young to tell) will groul, extend it's claws, put it's ears back
and try to scarf down the food as quickly as possible.

How should I break the animal of this habit?  It's kinda funny as a kitten
but it won't be once the cat reaches adult size.