International
Take the chicken out of the refrigerator 30 minutes before cooking and heat the oven to 220C.
Pat the chicken dry with paper towels, rub the skin with the olive oil and season it all over and inside the cavity with the salt and pepper.
Halve the lemon and the garlic head crosswise, put them in the cavity with the thyme and tie the legs together with kitchen string.
Set the chicken breast side up in a roasting pan and roast for 20 minutes.
Reduce the oven to 190C and roast for 50-60 minutes more, until the juices run clear and the thickest part of the thigh reaches 74C.
Rest the chicken, loosely covered with foil, for 15 minutes.
Discard the lemon, garlic and thyme, carve the chicken into legs, wings and breast slices and serve.