Soy-Many people that have problems with trace milk also have problems with
soy. Test some soy protein first, before going about making some milk.
(many with LI also have problems with gluten- may be your bread connection,
also).

Melons- Many with ragweed allergies cannot eat melons (and canola/rapeseed)
during ragweed pollen season. This may be just a seasonal problem.

My son has problems with soy and all legumes, so I can't help with soy
pizza, but we make home pizza with meatballs, or ham (& pineapple), beef
and broccoli, pork chops and apple pieces, etc.

(I bring in food every day to my 2 children in daycare)