Heat a large cast iron skillet over medium high heat and add the oil. Preheat your oven to 375°F (190°C).
Season the chicken thighs with the salt, pepper, basil, oregano, and garlic powder on both sides.
Add the chicken to the skillet and brown on both sides until golden. Don't worry about cooking the chicken through at this stage - just focus on getting that crispy brown crust on the outside.
Remove the chicken to a plate once it's browned and set aside.
Add the onion and garlic to the skillet and turn the heat to medium.
Sauté the onions and garlic until the onions begin to soften. Add the lemon juice, lemon zest, and the rice and stir everything together well, letting the rice toast just a little bit.
Add the chicken stock and stir well to combine. Turn off the heat under the skillet.
Nestle the chicken pieces into the liquid-y rice mixture in the pan, making sure the tops of the chicken pieces are sticking out of the liquid just a little bit.
Place the skillet in the oven for 20-25 minutes or until the chicken pieces are cooked through to an internal temperature of 165°F (75°C) and the rice is cooked.
Before serving, sprinkle with the feta cheese and chopped red onion and tomatoes, OR make a small Greek salad with the cucumber, tomatoes, onions, and feta cheese, and serve in bowls alongside the chicken and rice.