Preheat the oven to 180°C/350°F.
Remove chicken from the marinade, reserving the leftover marinade.
Heat ½ tbsp olive oil in a deep, heavy-bottomed skillet over medium-high heat.
Sear the chicken, skin-side down, until golden brown. Flip and cook the other side until golden. Remove and set aside.
Wipe the skillet to remove burnt bits, then heat 1 tbsp olive oil over medium-high heat.
Sauté the onion until translucent. Stir in the rice, reserved marinade, broth, water, oregano, salt, and black pepper.
Bring to a simmer for 30 seconds, then place the chicken on top.
Cover with a lid (or foil) and bake for 35 minutes.
Remove the lid and bake for an additional 10 minutes, until the liquid is fully absorbed and rice is tender.
Let the dish rest for 5–10 minutes before serving.
Garnish with chopped parsley, oregano, and fresh lemon zest.