1. Preheat the oven to 450F. Arrange the chicken halves, skin side up, in a roasting pan.
2. Combine the butter, lemon juice, oregano, rosemary, sage, salt and black pepper in a small bowl and mix well. Brush the chicken with the butter mixture.
3. Roast the chicken, turning occasionally, until the juices run clear, 30 to 40 minutes.
Variation
To save even more prep time, buy a chicken that has already been cut up or buy chicken-breast halves, or legs and thighs. Reduce the roasting time as needed. For added flavor, toss sliced onions and mushrooms in olive oil and roast alongside the chicken.