Hi,

Not sure if that will help but I am flying LHR – DFW in a bit less than 4 weeks time.
As per BA Manage my booking here is what I have been proposed as part of the “select your meal” option in the CW cabin.

Seared fillet of British beef and a sweet potato royale with Béarnaise sauce
Roast corn-fed chicken with a Madeira sauce, soft herb mashed potatoes and baby vegetables
Teriyaki stir-fry vegetables, egg noodles and cashew nuts
Chilled main course salad of seared tiger prawns, wild rice and quinoa with a bitter orange dressing

Based on your intolerances, I don’t think there is anything suited for you as part of the standard selection.
Hope this helps a bit.