Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper and lightly grease it with olive oil.
In a shallow bowl, combine the grated Parmesan cheese, breadcrumbs, Italian seasoning, garlic powder, onion powder, salt, and pepper. Mix until well combined.
In another bowl, whisk together the eggs and Dijon mustard until smooth.
Place the flour in a separate shallow dish.
Take each chicken breast and season with a pinch of salt and pepper. Then, dredge one breast in the flour, shaking off any excess.
Dip the floured chicken into the egg mixture, ensuring it's well coated, then roll it in the Parmesan-breadcrumb mixture, pressing down lightly to adhere the coating.
Repeat steps 5 and 6 with all chicken breasts, ensuring they are thoroughly coated.
Arrange the coated chicken breasts on the prepared baking sheet. Drizzle a little olive oil over each piece for crispiness.
Bake in the preheated oven for 25-30 minutes or until the chicken is cooked through and the coating is golden brown and crispy. The internal temperature should reach 165°F (74°C).
Allow the chicken to rest for 5 minutes before serving.