Preheat the oven to 400°F (200°C). Pat the chicken dry and rub it with olive oil, salt, pepper, garlic powder, paprika, and thyme. Season inside the cavity too.
Place the carrots, potatoes, onion, and garlic in a roasting pan. Drizzle with a little olive oil, sprinkle with salt, and pour the broth into the pan.
Set the chicken on top of the vegetables and squeeze lemon juice over it.
Roast for 1 hour and 15 minutes to 1 hour and 30 minutes, depending on the size of the chicken, until the skin is golden and the internal temperature reaches 165°F (74°C).
Let the chicken rest for 10 minutes before slicing. Spoon the pan juices over everything before serving.