Preheat your oven to 375°F (190°C) and grease a large casserole dish.

Spread the uncooked long-grain rice evenly across the bottom of the greased casserole dish.

Place the seasoned chicken over the rice and sprinkle with salt and pepper.

In a mixing bowl, combine Greek yogurt, grated cucumber, minced garlic, fresh dill, and lemon juice, stirring until blended.

Spoon the tzatziki sauce over the chicken and rice mixture.

Pour the chicken broth evenly over the mixture, ensuring all the rice is submerged.

Cover the casserole dish tightly with aluminum foil and bake for 45-50 minutes.

Once done, let the dish rest for 5 minutes before uncovering, and then serve.