Your husband may be having an acute gallbladder attack
This usually occurs after a fatty meal such as pizza.
It is very likely he has gallstones and one of the stones got
loose and got stuck inthe channel that carries bile to the
intestine. Bile is important for digestion of fat.
He should be taken to the nearest hospital emergency room
for evaluation. This will include blood tests and a sonogram of
the upper abdomen to look for gallstones. If cofirmed ,he would
have to have his gallbladder removed surgically (Laparoscope).
Please do not wait.