Preheat your oven to 200°C (390°F). Place a rack inside a roasting pan to ensure even heat circulation.
Pat the chicken dry with paper towels, both inside and out, to help achieve crisp skin.
Mix the olive oil with salt, pepper, dried thyme, and sage. Rub this mixture all over the chicken, making sure to coat every surface evenly.
Zest one lemon and sprinkle the zest over the chicken skin to add a bright citrus aroma.
Stuff the cavity with lemon halves, crushed garlic cloves, and sprigs of rosemary for infused flavor.
Truss the chicken with kitchen twine to ensure even cooking and a neat presentation.
Place the chicken breast side up on the rack in the roasting pan and slide it into the oven.
Roast for about 1 hour 20 minutes, basting every 20 minutes with the pan juices to keep the skin moist and flavorful.
Use a meat thermometer to check for doneness; the internal temperature should reach 75°C (165°F). The skin should be golden brown and crispy.
Remove the chicken from the oven and tent loosely with foil. Let it rest for at least 15 minutes to lock in juices.
Carve the chicken and serve with roasted vegetables or a fresh salad for a beautiful, flavorful meal.