Preheat oven to 400°F (200°C) and lightly coat a baking dish with non-stick spray.
Establish a breading station with three bowls: flour seasoned with salt and pepper; beaten eggs; and a mixture of Panko, Parmesan, oregano, and garlic powder.
Dredge each chicken cutlet in flour, dip into the egg wash, then press firmly into the Panko mixture to ensure full coverage.
Heat olive oil in a large skillet over medium-high heat and sear chicken cutlets for 2 minutes per side until golden brown but not fully cooked.
Transfer seared cutlets to the baking dish in a single layer.
Spoon 0.25 cups of marinara sauce over each cutlet and top evenly with shredded mozzarella cheese.
Bake for 15 to 20 minutes until the internal temperature of the chicken reaches 165°F (74°C) and the cheese is bubbly and slightly browned.
Garnish with fresh basil and allow to rest for 5 minutes before serving.