1Insert the wire rack into position 6 and place the roasting pan on the rack. Set the oven to Roast, Super Convection, 400°F, for 25 minutes, confirm Rotate Remind and press Start to preheat. Meanwhile, continue to the next step.
Tip: The burst of heat from the hot pan crisps the chicken skin and stops it sticking to the pan.
2Combine the salt, mustard, paprika and pepper. Drizzle the chicken with the lemon juice, spice mixture and oil, turn to coat between each addition.
3Once preheated, place the chicken, skin side down, in the hot pan and cook for 25 minutes. When the Rotate Remind signals, rotate the pan and turn the chicken over and continue cooking. Meanwhile, prepare the vegetables.
4Cut the carrots and parsnips into 3-inch long and ¾-inch wide wedges and place in a bowl. Cut the onion into ¾-inch wedges, leaving the core intact so they hold their shape. Cut the Brussels sprouts in half and add to the bowl. Add the oil, salt and season with pepper and toss.
5The chicken should be cooked through when a meat thermometer inserted into the thickest part, away from the bone, reads 165°F. If not, cook it a little longer.
6Transfer the chicken to a dish, skin side up, and keep warm. Drain off the excess fat from the pan. Add the vegetables to the pan and toss.
7Place the vegetables in the oven. Adjust the time to 20 minutes and press Start. Meanwhile, make the dressing.
8Heat the oil in a saucepan over medium heat. Add the garlic and cook, stirring for 1 minute, or until lightly browned. Add the rosemary, lemon zest and juice and salt, stir and immediately remove from the heat. Heating the oil brings out the flavors and infuses the dressing.
9Pierce the vegetables with a knife, the knife should easily slide in without any resistance. If not, cook a little longer.
10Place the chicken, skin side up, on top of the vegetables, and pour any juice from the chicken over the vegetables. Move the wire rack to position 4.
11Adjust the oven to Broil, High, for 2 minutes and press Start to broil.
12The chicken should be browned and crisp. If not, broil for a few more minutes.