01 - Preheat oven to 400°F for roasting.
02 - Rub the chicken inside and out with olive oil, salt, and pepper. Stuff the cavity with lemon halves, crushed garlic, rosemary, and thyme.
03 - Place the chicken breast-side up in a large roasting pan. Tuck the wings under the body to ensure even cooking.
04 - Roast the chicken for 40 minutes to begin the cooking process.
05 - In a large bowl, toss baby carrots, halved potatoes, sliced fennel, and red onion wedges with olive oil, salt, and pepper until evenly coated.
06 - After 40 minutes, scatter the prepared root vegetables around the chicken in the roasting pan.
07 - Return to the oven and continue roasting for 20 minutes to start cooking the vegetables.
08 - Add asparagus pieces and sugar snap peas to the pan, tossing lightly with the other vegetables to distribute.
09 - Roast for another 10-15 minutes, or until the chicken juices run clear when the thigh is pierced and vegetables are tender.
10 - Remove the chicken from the oven and let rest for 10 minutes before carving to allow juices to redistribute.
11 - Arrange roasted vegetables on a serving platter, place carved chicken on top, and sprinkle with chopped fresh parsley and lemon zest.