Preheat your oven to 400°F (200°C).
Place an oven-safe roasting rack over the tightly covered rice tray, making sure it is stable and can support the chicken.
Place the seasoned, flattened chicken on the rack, breast-side up, directly above the rice.
Transfer the tray carefully into the preheated oven.
Roast for approximately 1–1 1/2 hours, depending on the size of your chicken. Check the rice earlier, around 35–45 minutes, because it may finish before the chicken. Carefully remove the hot tray and check whether the rice is tender and the liquid has been absorbed. If the rice is ready, keep it covered and warm while the chicken finishes cooking separately.
Continue roasting the chicken until the skin is beautifully golden and crispy and a meat thermometer inserted into the thickest part of the breast and thigh reaches at least 165°F (74°C).
Remove the chicken from the oven and allow it to rest for approximately 10 minutes before cutting.
Carefully remove the aluminum foil from the rice, keeping your face and hands away from the hot steam.
Fluff the rice gently with a fork, arrange the roasted chicken over the rice, and serve!