Marinate Chicken:
In a bowl, combine olive oil, oregano, garlic powder, paprika, lemon zest, lemon juice, and minced garlic. Rub mixture all over chicken thighs. Let marinate at room temp for 15–30 minutes.
Preheat Oven:
Preheat oven to 425°F (220°C).
Sear Chicken:
Heat a large oven-safe skillet over medium-high heat. Sear chicken skin-side down for 5–7 minutes until golden brown. Flip and cook for 2 more minutes.
Add Veggies & Roast:
Add cherry tomatoes, olives, and sliced red onion to the skillet around the chicken. Transfer skillet to the oven and roast for 18–22 minutes, or until chicken reaches 165°F internal temperature.
Serve:
Garnish with fresh parsley or basil. Serve hot with lemon wedges and your choice of grain or salad.