Pat the 4 chicken thighs dry with paper towels. Season both sides generously with salt and pepper.
In a shallow bowl, combine 1 cup grated Parmesan cheese, 1 cup breadcrumbs, 2 teaspoons garlic powder, 1 teaspoon onion powder, 1 teaspoon dried oregano, 1 teaspoon paprika, and a pinch of salt and pepper. Mix well.
In another bowl, beat 2 eggs until smooth.
Dip each seasoned chicken thigh into the beaten eggs, then press into the Parmesan breadcrumb mixture to coat both sides. For a thicker crust, repeat the dipping and coating once more.
Heat 2 tablespoons olive oil in a cast iron skillet or heavy pan over medium heat. Add chicken thighs skin side down and cook without moving for 5-7 minutes until golden and crispy.
Flip the chicken and cook for another 5-7 minutes until the internal temperature reaches 165°F and the crust is crispy and golden brown. Lower heat if needed.
Transfer chicken to a plate and let rest for 5 minutes before serving to redistribute juices.