Preheat the oven to 400 degrees F (200 degrees C). Line a sheet pan with parchment paper. For crispier results, place a wire rack on the sheet pan (optional).
Place the chicken breasts on a cutting board and slice horizontally to create 4 even cutlets. If needed, place the cutlets between plastic wrap and gently pound them to an even 1/4-inch thickness.
In a medium plate or bowl, combine the panko breadcrumbs, Parmesan cheese, Italian seasoning, garlic powder, onion powder, salt, and black pepper. Mix the ingredients well to create your breadcrumb mixture.
Using a pastry brush, evenly spread the mayonnaise over both sides of each of the thin cutlets. This will ensure that the coating sticks and adds moisture.
Place each mayonnaise-coated chicken cutlet into the Parmesan mixture, pressing gently to ensure the coating sticks. Turn the chicken to coat both sides thoroughly and repeat for all cutlets.
Place them in a single layer on the prepared sheet pan, leaving space between each piece. Drizzle or spray olive oil lightly over them for extra crispiness.
Bake the chicken in the preheated oven for 18-20 minutes, or until the chicken is golden brown and the internal temperature reaches 165 degrees F (74 degrees C).
Let the crispy chicken rest for 5 minutes before serving. Garnish them with fresh herbs and lemon wedges.