Preheat the oven to 450°F (232°C).
Remove and discard the giblets and neck from the chicken, rinse the chicken and pat it dry with paper towels; trim excess fat.
Gently loosen the skin over the breast and drumsticks by sliding your fingers between the skin and meat, taking care not to tear the skin.
In a small bowl, mix the chopped rosemary, chopped thyme, salt, pepper, and crushed garlic.
Rub about half of the herb‑garlic mixture underneath the loosened skin and spread the remaining mixture over the outside of the breast.
Tuck the wing tips behind the chicken's back and truss or tuck the legs if desired so the bird cooks evenly.
Place the chicken breast‑side up on a broiler pan or roasting pan fitted with a rack coated lightly with cooking spray.
Pierce the skin a few times with a meat fork (optional), insert a meat thermometer into the thickest part of the thigh without touching bone, and brush the chicken all over with the lemon curd.
Arrange the lemon wedges around the chicken on the pan.
Bake at 450°F for 30 minutes, then reduce the oven temperature to 350°F (177°C) and continue roasting about 60 minutes more, or until the thigh reaches 180°F (82°C) and juices run clear; cover loosely with foil if the skin is browning too quickly.
Remove the chicken from the oven and tent loosely with foil; let rest for 10 minutes before carving.
Serve the carved chicken with the roasted lemon wedges.