When I let my sister know that I was going to Rome all she kept saying was you need to go to Roscioli Salumeria Con Cucina located in the heart of Rome! She and her husband said it was the best meal they have ever had and they tell everyone to go there. When we discovered it was only a three minute walk from our hotel we were thrilled. It did not disappoint! I would highly recommend a reservation and to dine in the wine cellar. The reservation is very easily made on their website. When you travel to Rome with food allergies there is a lot of research to be done and I had a hard time finding information on specific restaurants. But if you do your research it can be done. We have a daughter with a lot of food allergies and there was a comment section on the reservation form where we inquired about what she could eat.
Our first night in Rome we ventured out for a beautiful walk through Rome to the restaurant. We were greeted by our waiter Ricardo and brought to the wine cellar. He was aware of the food allergies and let her know that she would have a fabulous meal. She is allergic to peanuts, tree nuts, carrots, cucumbers, legumes, zucchini and eggplant but they had it under control. Honestly, I do believe he was very relieved that we were not uptight about it and she didn’t care what she had, she was just happy to be there. We were told to order the cacio e pepe and we would be amazed. 
We were! The wine was wonderful and the caprese salad, bread, gnocchi, ravioli, the limoncello, tortellini in brodo (homemade tortellini in broth) was so simple and to die for. The menu had a food allergy labeling system that made it all so easy. If you are gluten free, I found the restaurants bent over backwards to accommodate you. Roscioli is comfortable, relaxed and not very expensive, the perfect restaurant for our first night in Rome. They even brought us a little dessert with cookies you could dip in chocolate to welcome us to Rome. Roscioli is a must see.. I do believe it was the best meal I have ever had in my life.
I’d much rather drink wine and eat pasta than be a size zero – Sophia Loren