01 - Preheat oven to 400°F. Lightly grease a baking dish or line with parchment paper.
02 - In a small bowl, whisk together olive oil, lemon juice, lemon zest, black pepper, garlic powder, onion powder, dried oregano, and salt.
03 - Pat chicken breasts dry with paper towels and place them in the prepared baking dish.
04 - Pour marinade over chicken, turning each breast to ensure even coating.
05 - Bake uncovered for 25 to 30 minutes until internal temperature reaches 165°F and chicken is cooked through.
06 - Allow chicken to rest for 5 minutes. Garnish with chopped parsley and lemon slices before serving, if desired.