Pat chicken dry and bring to room temperature.
Mix butter, garlic, herbs, lemon zest, salt, and pepper.
Loosen chicken skin and rub butter under and over it.
Stuff cavity with lemon, herbs, and garlic. Tie legs with kitchen twine.
Roast at 425°F (220°C) for 20 minutes, then reduce to 375°F (190°C) and roast for 50–60 minutes.
Baste every 20 minutes for crispy, golden skin.
Check internal temperature — it should reach 165°F (74°C) in the thigh.
Let chicken rest for 15–20 minutes before carving.
Make pan sauce with broth and drippings, serve warm.