Cook the rice blend according to package instructions; set aside.
Roast the chicken at 425°F (220°C) with 2 tbsp olive oil, salt, and pepper until internal temp reaches 165°F (about 20 min). Rest, then chop into chunks.
Peel and dice the butternut squash. Sauté with onion, remaining oil, salt, and pepper until tender (~8 min).
Mix chicken, squash, thyme, cranberries, ¼ cup Parmesan, and rice. Transfer to a sprayed baking dish.
Bake at 350°F (175°C) for 15 min, then top with nuts and remaining Parmesan. Bake 8–10 min until cheese melts and nuts are golden. Garnish with thyme.
Notes
Ensure the chicken reaches the proper internal temperature for safety.