A rolled, boned chicken certainly makes things easier in the
carving department come Christmas lunch. It's a satisfying job to
tackle yourself, but by all means ask your butcher to perform the
task to make life easier.
For salsa verde, combine herbs, garlic, anchovies and capers in a mortar and pound to a coarse paste. Stir in red wine vinegar, lemon juice and olive oil and season to taste.
Place potatoes in a large saucepan, cover with cold water, add a pinch of salt, bring to a simmer over medium heat and cook until tender (15-20 minutes). Drain and halve lengthways.
Preheat oven to 200C. Place chicken skin-side down and spread half the salsa verde over the flesh (reserve remaining). Scatter preserved lemon over the top and roll lengthways to enclose filling. Secure with kitchen twine at 5cm intervals.
Place in a roasting pan, drizzle with olive oil, season and roast until golden brown and just cooked (35-40 minutes). Rest, loosely covered, for 10 minutes, then cut into thick slices and serve with potatoes and remaining salsa verde and drizzle with pan juices.