Prep the oven and pan: Preheat your oven to 375°F (190°C). Lightly oil a 9x13-inch baking dish.
Rinse the rice under cold water until the water runs clearer; drain well.
Season the chicken: Pat the chicken dry. In a small bowl, mix the salt, pepper, paprika, thyme, garlic powder, and onion powder. Rub 2/3 of the mixture onto the chicken (both sides).
Reserve the rest for the rice.
Sauté aromatics (optional but recommended): In a skillet, warm 1 tablespoon oil over medium heat. Cook the onion for 3–4 minutes until softened, then add garlic for 30 seconds. This step builds deeper flavor.
Layer the rice and veggies: Add the rinsed rice to the baking dish.
Stir in the sautéed onion/garlic, carrots, peas, and the remaining seasoning. Drizzle in the remaining oil or butter. Spread evenly.
Add the liquid: Pour in the chicken broth.
For fluffier rice, warm the broth on the stove first; hot liquid jump-starts cooking and reduces uneven spots. Taste the liquid—add a pinch of salt if needed.
Nestle the chicken: Place the chicken thighs on top of the rice, skin-side up. Don’t submerge the skin; keeping it above the liquid helps it crisp.
Cover and bake: Cover tightly with foil and bake for 30 minutes.
Uncover and finish: Remove the foil and bake another 20–25 minutes, until the chicken is cooked through (internal temp 165°F/74°C) and the rice is tender.
If the top needs more color, broil for 2–3 minutes, watching closely.
Rest and brighten: Let the dish rest for 5–10 minutes. Add lemon zest and a squeeze of lemon juice for freshness, and scatter chopped parsley over the top.
Serve: Spoon rice onto plates, top with a chicken thigh, and drizzle with any pan juices. Season to taste.