In a small bowl, mix kosher salt, black pepper, garlic powder, onion powder, and smoked paprika together.
Sprinkle half of the seasoning mixture evenly over both sides of the thin cutlets.
Divide the remaining seasoning—half into the flour bowl and the other half into the breadcrumb mixture.
Preheat oven to 425°Fahrenheit (218° Celsius). Line a prepared baking sheet with parchment paper and spray lightly with cooking spray.
In a shallow bowl, mix all-purpose flour with the reserved seasoning.
In another shallow bowl, whisk together eggs and Dijon mustard to create an egg mixture.
In a third shallow bowl, combine panko breadcrumbs, traditional breadcrumbs, Parmesan cheese, the rest of the reserved seasoning, and olive oil.
Dredge each piece of chicken in the flour mixture, shaking off excess.
Dip into the egg mixture, making sure it's fully coated.
Press into the breadcrumb mixture, ensuring an even coating.
Arrange breaded chicken cutlets in a single layer on the prepared baking sheet.
Lightly spray the tops with cooking spray for extra crispiness.
Bake for 18-20 minutes, flipping halfway through, until golden brown and the internal temperature of the chicken reaches 165°Fahrenheit (74° Celsius) using a meat thermometer.
Let the crispy chicken cutlets rest for 2 minutes before serving.