Preheat your oven to 375°F (190°C). This ensures that your casserole cooks evenly.
Season the chicken thighs or drumsticks with salt, pepper, paprika, oregano, and basil. Make sure to coat them evenly for that perfect flavor.
In a large mixing bowl, combine the white rice, chicken broth, lemon juice, lemon zest, and cream of mushroom soup. Stir well to combine all the ingredients into a cohesive mixture.
Spray your baking dish with cooking spray to prevent sticking. Pour the rice mixture into the bottom of the dish, spreading it evenly. Then, place the seasoned chicken on top of the rice mixture. Drizzle the melted butter over the chicken for added richness.
Cover the dish with aluminum foil and bake in the preheated oven for 45 minutes. After that, remove the foil and bake for an additional 15-20 minutes, or until the chicken is cooked through and the rice is tender.
Once done, remove the casserole from the oven and let it sit for a few minutes. Sprinkle chopped parsley over the top for a fresh finish. Serve hot and enjoy the delightful flavors of lemon chicken and rice casserole.