Preheat oven to 200C (fan-forced).
Lay butterflied chicken flat on a roasting tray, drizzle and rub with olive oil, sprinkle with salt. Roast for 50 minutes.
Allow chicken to cool in the roasting pan for 20 minutes to release its juices.
Meanwhile, make the pasta: Add powdered chicken stock and some salt to a medium saucepan filled with water. Bring to the boil, add pasta and cook until al dente.
Drain pasta reserving 250ml of the cooking liquid. To the liquid add garlic powder, chilli flakes, balsamic, dijon mustard and honey. Stir to combine.
Remove chicken from the tray which should have a nice amount of chicken fat and juices in it. Add pasta water and mix together. Place tray on the stovetop and cook until liquid has thickened slightly.
Remove tray from the stovetop, add pasta and coat in the chicken sauce. Next toss through radicchio and olives along with a squeeze of lemon. Season with salt and pepper.
Garnish generously with parmesan shavings.
Serve orecchiette alongside the roasted chicken, spooning over any left over chicken sauce.