01 - Preheat oven to 400°F.
02 - Rub the chicken inside and out with 2 tbsp olive oil, 1 tsp salt, and ½ tsp pepper. Stuff the cavity with lemon halves, smashed garlic cloves, thyme sprigs, and rosemary sprigs.
03 - Place chicken breast-side up on a roasting rack set in a large roasting pan.
04 - Toss halved potatoes and peeled carrots with 1 tbsp olive oil, ½ tsp salt, and ¼ tsp pepper. Arrange around the chicken in the pan.
05 - Roast for 35 minutes.
06 - Add asparagus pieces and trimmed sugar snap peas to the pan, tossing gently with the other vegetables. Continue roasting for another 20 minutes, or until the chicken's juices run clear and a thermometer inserted in the thickest part of the thigh reads 165°F.
07 - Let chicken rest for 10 minutes before carving. Serve with roasted vegetables.