01 - Preheat oven to 375°F.
02 - Pat turkey breast dry with paper towels and place on a rack in a roasting pan.
03 - In a small bowl, combine olive oil, rosemary, thyme, sage, garlic, salt, pepper, and lemon zest to form a paste.
04 - Gently loosen the skin and rub half the herb mixture underneath. Spread remaining mixture over the top of the skin.
05 - Arrange lemon and onion slices in the roasting pan, then pour chicken broth into the pan.
06 - Place turkey breast skin-side up on the rack over the aromatics.
07 - Roast for 1 hour 10–20 minutes until internal temperature reaches 165°F, basting with pan juices once or twice during cooking.
08 - Remove from oven, tent loosely with foil, and let rest for 10–15 minutes before slicing.