In a shallow bowl, add the egg and beat lightly with a fork.
In another shallow bowl or plate combine breadcrumbs, a little salt, and pepper.
Dip both sides of each cutlet into the egg, shaking off excess, and dip into breadcrumbs. Repeat with all cutlets. Place the coated cutlets on a large plate.
Coat a large nonstick pan with cooking spray. Add ½ tablespoon oil and heat pan. Add cutlets and cook until golden, about 2 minutes. Turn over and cook the other side for about 2 minutes until golden and cooked through. Remove to a large clean plate. If the pan can’t hold all the cutlets at once, repeat the cooking steps with the remaining cutlets. You might need to coat the pan with more cooking spray and a little olive oil.
To make salad: In a large bowl, add arugula and tomatoes. Toss with salad dressing and vinegar to coat.
To serve: place two cutlets on each plate. Add the arugula and tomato salad. Top each salad with 1 tablespoon cheese.
Serve each with a lemon wedge or squeeze the cutlets with lemon before serving.