Preheat your oven to 425°F (220°C) to achieve golden-brown, crispy skin.
Pat the chicken dry with paper towels to remove moisture for better browning.
Rub the entire chicken with olive oil or softened butter, covering all surfaces. Sprinkle salt and pepper generously inside and out.
Stuff the cavity with quartered lemon, smashed garlic cloves, and fresh rosemary sprigs to infuse flavor.
Optionally, tie the chicken legs together with kitchen twine for even cooking and presentation.
Place the chicken breast-side up in a roasting pan and roast for about 1 hour and 15 to 1 hour and 30 minutes, until the internal temperature reaches 165°F (74°C) at the thickest thigh part.
About halfway through roasting, baste the chicken with the drippings from the pan to enhance flavor and moisture.
Remove the cooked chicken from the oven and let it rest for 15-20 minutes to redistribute juices.
Carve the chicken and serve with roasted lemon wedges and additional rosemary sprigs as garnish. Enjoy with your favorite sides.