Preheat your oven to 375°F (190°C) to prepare for baking your Lemon Chicken Casserole.
In a mixing bowl, combine the cubed chicken breast with 1 teaspoon of salt, 2 teaspoons of lemon pepper, and 1 teaspoon of dried basil. Toss to coat the chicken evenly with the seasonings.
In your 9x13-inch baking dish, pour in the melted butter, followed by the seasoned chicken. Spread the chicken evenly across the bottom of the dish.
Sprinkle the uncooked white rice evenly over the chicken. Next, pour in the chicken broth, ensuring the rice is completely submerged.
In a small bowl, whisk together the lemon juice, lemon zest, minced garlic, onion powder, remaining salt, pepper, and thyme. Pour this mixture over the rice and chicken in the baking dish.
Arrange the thin slices of lemon on top of the casserole for an added zesty flavor and beautiful presentation.
Cover the baking dish with aluminum foil and bake in the preheated oven for 40 minutes. After 40 minutes, remove the foil and bake for an additional 15-20 minutes, or until the chicken is cooked through and the rice is tender.
Once baked, remove the casserole from the oven and let it cool for a few minutes before serving. Fluff the rice with a fork and enjoy your Lemon Chicken Casserole warm!