We eat a lot of vegetarian at home and at WDW always need at least one "break" from the meat. We love Tusker House in Animal Kingdon. It is a counter service place, but there is some really nice outdoor seating. The grilled vegetable sandwich with a side of tabouleh is delicious, filling, refreshing, and reasonable. Kona Cafe in Polynesian had a vegetable stir fry that was pretty good. Have had some delicious salads with fruits, nuts, and cheeses that would suffice as a lunch--Columbia Harbor House and Cindy's, as I recall.