I find the tomato sauce on pizza is often harsh without cheese, I suppose to make the flavor come through when there's cheese on the pizza.  If lactose is your son's problem, most varieties of Kraft cheese "contain 0 grams of lactose per serving".  I sometimes take some with me when we go to a pizza place, order the pizza without cheese and then add some on top when the pizza gets to the table.  Even better is take out, so I can sprinkle the cheese-less pizza with Kraft cheese and then run it under the broiler to melt it.  This would work with soy or rice cheese as well.
As to dairy in the crust, I've had to find out which kinds I can tolerate mostly by trial and error.  Most pizza place employees are teens who don't know the different kinds of dairy.  Our local Papa Murphy's pizza is owned by a friend and he's let me read labels:  their ingredients are dairy free except for the obvious: cheese, alfredo sauce, etc.  
One thing to keep in mind is that sometimes franchises differ in ingredients used, one part of the country might use dough with no dairy, where another part of the country uses a different supplier.
The lactose intolerant life is a big puzzle.  I'm trying Lactogen right now to see if I can turn things around and start tolerating.  Any comments on the stuff from anyone?
Katherine.

________________________________

From: Milk/Casein/Lactose-Free List on behalf of Kornblum-Dobson
Sent: Sun 5/21/2006 8:25 AM
To: [log in to unmask]
Subject: Re: Domino's Buffalo wings?



I have ordered pizza without cheese for my son, at various establishments.
His favorite is with pineapple and pepperoni (and tomato sauce), and a
little olive oil on it can be good, too.  I have never ordered anything from
Domino's, but if they are careful not to put it together on a cheesy counter
and if they wash the knife they'll be cutting it with, it oughta be okay.
(I always specify these things.)  Also, every once in a long while you find
a place that has some dairy in the crust; worth an initial inquiry.  The
best pizza my son has had is the pizza I make myself, but that is more of a
project than I usually have time for anymore.





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