In a small bowl, combine olive oil, melted butter, garlic, lemon juice from one lemon, orange juice, oregano, Dijon, salt and black pepper. Set aside.
Add chicken to a large bowl and pour marinade all over. Cover with plastic wrap and marinate chicken for at least 2 hours.
Preheat oven to 425°F. Spray a large sheet pan with cooking spray or line with parchment paper.
Arrange chicken with marinade on prepared pan. Add both lemon halves (face down), and olives to the pan. Transfer to the oven and roast for 35-40 minutes or until internal temperature of the chicken reaches 165°F and golden brown in color. Serve with optional ingredients, if desired. Enjoy!
