Make your arugula salad by combining ingredients in a bowl and mixing until combined. In another bowl, make tomato & onion salad by combining ingredients. Set aside while you prepare the chicken.
Add your fry ingredients to 3 bowls: flour, eggs and panko. Add everything but the bagel seasoning to the panko breadcrumbs and stir until combined. Starting with the flour, then eggs, then panko, coat chicken slices. Transfer to a plate and repeat with remaining slices of chicken.
Add fry oil to a large skillet. When oil reaches 350, add chicken. Cook for about 3-4 min per side or until chicken is a deep golden brown. Transfer to a cooling rack. Crank oven up to broil and top chicken with sliced of mozzarella. Broil for about 3 min or until cheese is browned and bubbly. Add bread for the last minute or so.
Add a drizzle or balsamic to both pieces of bread and top with cutlet, followed by arugula salad, then tomato & onion salad. Slice and enjoy!