01 - Preheat the oven to 400°F.
02 - Pat the chicken dry with paper towels. Rub the skin all over with olive oil, salt, and pepper.
03 - Stuff the chicken cavity with the lemon halves, 1 rosemary sprig, and 2 thyme sprigs.
04 - Place the chicken breast side up in a large roasting pan or ovenproof skillet.
05 - Arrange potatoes, carrots, onion, and garlic cloves around the chicken. Drizzle vegetables with a little extra olive oil and season with salt and pepper.
06 - Add the remaining rosemary and thyme over the vegetables.
07 - Roast for 50 minutes, basting chicken with pan juices halfway through.
08 - Remove pan from oven. Add asparagus and sugar snap peas to the vegetables, toss gently.
09 - Dot the chicken with softened butter and sprinkle the lemon zest over the chicken and vegetables. Pour chicken broth or water into the pan.
10 - Return to the oven for an additional 20 minutes, or until the chicken is golden and a thermometer inserted into the thickest part of the thigh reads 165°F.
11 - Let the chicken rest for 10 minutes before carving. Garnish with chopped parsley and serve with the roasted vegetables.