Can a special diets reduce barrett's esophagus symptoms?

Sort of. Batretts esophagus is an asymptomatic disease caused by reflux. Barretts in itself may reduce reflux symptoms a bit but is a precancerous condition. Dietary modifications which help reflux symptoms include eating smaller meals, avoiding late meals, avoid caffeine, nicotine, peppermint, chocolate, spicy foods, tomatoes and tomato sauce.
Yes. Eating foods that reduce your chance of acid reflux can help barrett's heal. Foods to avoid include chocolate, caffeine, spicy foods, and acidic foods such as tomatoes. Also, eating smaller meals rather than overeating can also help.