In a large skillet, heat the olive oil over medium-high heat. Season the chicken breasts or thighs with dried oregano, paprika, cayenne pepper, salt, and black pepper. Once the oil is hot, add the chicken to the skillet and sear for about 5-7 minutes on each side, or until golden brown. Remove from the skillet and set aside.
In the same skillet, add the salted butter. Once melted, toss in the sliced shallots and chopped garlic. Sauté for 2-3 minutes until fragrant and the shallots become translucent.
Stir in the dry rice and orzo, mixing well to coat in the buttery mixture. Pour in the chicken broth, ensuring all the grains are submerged. Bring to a gentle simmer.
Nestle the seared chicken back into the skillet, and place the lemon slices on top. Cover the skillet and allow it to simmer on low heat for 15-20 minutes, or until the rice is cooked and has absorbed most of the liquid.
Once the rice is cooked, add the chopped spinach and crushed green olives. Stir to combine and let it cook for an additional 2-3 minutes until the spinach is wilted. Finish with crumbled feta cheese, fresh basil leaves, and a squeeze of lemon juice for that extra zing.
Plate your delicious One Skillet Greek Lemon Chicken and Rice and serve warm. Enjoy the burst of Mediterranean flavors in every bite!