Preheat your oven to 425°F (220°C).
Pat the chicken dry with paper towels.
Rub the olive oil all over the chicken.
Season the chicken generously with salt, black pepper, garlic powder, and onion powder.
Stuff the cavity with lemon halves and fresh herbs.
Place the chicken on a roasting rack in a baking dish.
Arrange chopped vegetables around the chicken.
Roast in the preheated oven for 1 hour and 15 minutes.
Use a meat thermometer to ensure the internal temperature reaches 165°F (75°C).
Let the chicken rest for 10-15 minutes before carving.