Prepare the Lemon Butter
Preheat the oven to 150°C (300°F).
In a bowl, combine the softened butter, Aleppo chili flakes, preserved lemon, thyme, and garlic.
Mix until fully incorporated and set aside.
Make the Stuffing
Remove the casing from the halal beef sausages.
Combine the sausage meat, crushed almonds, torn bread, and rosemary in a mixing bowl.
Mix until evenly combined.
Prepare the Chicken
Pat the chicken dry thoroughly with paper towels.
Carefully loosen the skin over the breast and thigh areas without tearing it.
Rub half of the preserved lemon butter underneath the skin, spreading evenly.
Rub the remaining butter mixture all over the outside of the chicken.
Pack the stuffing tightly into the cavity.
Tie the legs together with kitchen string.
Roast the Chicken
Place the chicken in a roasting pan.
Roast for 1 hour and 20 minutes.
Baste with the pan juices halfway through cooking.
Increase the oven temperature to 220°C (425°F).
Baste again and continue roasting for another 10–15 minutes.
The skin should be deeply golden and crisp, and the juices should run clear when the thickest part of the thigh is pierced.
Remove from the oven and loosely tent with foil.
Allow the chicken to rest for 10 minutes before carving.
Prepare the Spiced Potatoes
Place the potatoes in a saucepan and cover with cold salted water.
Bring to a boil over medium heat.
Cook for 20–25 minutes or until fork tender.
Drain and allow them to cool slightly.
Gently crush the potatoes using your hands or the base of a glass.
Transfer to a serving bowl.
Add the eschalot, vinegar, olive oil, parsley, smoked paprika, fennel seeds, and lemon juice.
Toss gently until coated.
Season with salt and black pepper to taste.
Serve alongside the Preserved Lemon Roast Chicken