Whole Foods, has gluten free and lots of other foods that are for people with food allergies.
Most friends of my kids', who have allergies, the Mom, brings foods to our home that their child can eat. OR the Mom herself, will tell me suggestions. FOR her child.
They don't just leave it to me, to research.
And, anything you make, you'd need to ask the parent, for SURE, if that food/ingredient, is even okay.
Don't guess.
And per some food allergies, it is not only the "ingredient" that you have to be concerned about. IF you get food, from some commercial establishment, you do not know... HOW they cook the food, if there is cross-contamination of the foods being prepped or cooked on the same cooking equipment, etc. or if the pans or oils used to cook one dish, is used again to cook another dish. If so, there will be cross-contamination of the foods. Even if the ingredients... are different.
ie: if someone is allergic to peanuts. Many foods/products are made on machinery that may also be used to make, peanut type foods. Hence, even if a turkey sandwich has no peanuts in it, IF that sandwich was cut on a cutting board and with a knife that was also used to cut a Peanut Butter Sandwich, that cutting board and knife, will have, residual peanut oils on it. Hence, cross contamination. Hence, it will cause an allergic reaction in someone who is allergic, to nuts.
So it is not just about food ingredients, but about food prep and how the food was prepped and cooked and in what and how.
JUST ask, the parent/Mom, of the child, that has the food allergies. So you know for sure and are not guessing.
Also, just ask the Mom... what she does for her allergic son... per "pizza."
And what she uses as an alternative. She must know.