I paid $5.49 for one.
The mozzarella offered a soft, slightly chewy texture due to the higher moisture content versus regular mozzarella along with a milky flavor. They managed to place a nice, even layer of it across the width of the sandwich.
The tomato were fresh rather than soggy and sported a slightly-sweet balsamic glaze that worked well with the pesto. Sliced might have been a better way to do though as the diced tomatoes tended to fall out with the slightest shift of the sandwich. The greens were fairly fresh and somehow managed to stay put this time around (usually I'm losing pieces of them while eating as well).
My particular grilled chicken filet was super thick and pretty moist with a nice, even coverage width-wise as well.
When it comes down to it, Wendy's Fresh Mozzarella Chicken Sandwich was well-executed and managed to hit the classic flaovrs of a caprese sandwich, especially with a surprisingly distinct (and enjoyable) hit of basil.
Nutritional Info - Wendy's Fresh Mozzarella Chicken Sandwich (232g)
Calories - 430 (from Fat - 130)
Fat - 14g (Saturated Fat - 6g)
Sodium - 920mg
Carbs - 33g (Sugar - 6g)
Protein - 40g