The tomato is breaded and fried, and then served on bread, so, no, it's not all that healthy. I'll be disappointed if they start going the way of salads at the vegetarian option again, but if they're adding a turkey burger I guess there will probably be an off menu veggie burger like they used to do at Taste Pilot's. I also think that the persistent rumor and internet search results that say that the sauce contains fish probably keeps a lot of vegetarians from ordering it, so I could see why they'd change the vegetarian offering if people are actually ordering the salad without chicken instead of the sandwich. If this means that there will be a gluten free dedicated fryer because they've gotten rid of the breaded tomatoes, then I guess that does add more options for another set of dietary needs, so that's at least a good move.
