Prepare the Café de Paris butter by mixing softened unsalted butter with finely chopped shallot, grated garlic clove, fresh parsley, chives, tarragon, lemon zest, lemon juice, Dijon mustard, Worcestershire sauce, paprika, curry powder, and Espelette pepper
Season the butter mixture with salt and black pepper to taste
Spatchcock the whole chicken by removing the backbone and flattening it
Rub the Café de Paris butter under and over the chicken skin
Roast the spatchcocked chicken until cooked through and golden
Prepare double-cooked chips from potatoes
For the sauce, sauté finely chopped shallot until softened
Deglaze with white wine and reduce
Add heavy cream and cooking juices from the chicken
Whisk in 2 tbsp of Café de Paris butter
Finish sauce with a squeeze of lemon juice and season with salt and pepper
Plate the chicken with chips and drizzle with sauce
Garnish with fresh chives
