Prepare the Chicken: Pat the chicken breasts dry with a paper towel. In a small bowl, mix garlic powder, paprika, onion powder, oregano, salt, and pepper. Rub the seasoning blend evenly on both sides of the chicken.
Sear the Chicken: Heat olive oil in a large skillet over medium heat. Once hot, add the chicken breasts and cook for 5-6 minutes on one side, undisturbed.
Flip and Cook Through: Turn the chicken over and cook for another 5-6 minutes until the internal temperature reaches 165°F (75°C).
Rest and Serve: Remove the chicken from the pan and let it rest for 5 minutes before slicing. Garnish with fresh parsley, if desired, and serve warm.