Pre-heat your oven to 230C / Gas 8. Position the top shelf, you’ll need a big tray for this.
Toss the “chips” with the vegetable oil. Put them at the front of the tray. Roast for 15 minutes.
Brush the chicken breasts with a little vegetable oil. Rub each chicken breast with a pinch of salt and 1/4 tsp jerk spice, more if you like it hot. Put the chicken breasts onto the back of the tray. Roast for 10 minutes more. Baste both chicken and King Edwards with the cooking fat. Turn the King Edwards. Sprinkle them with 1tsp jerk spice. Roast for 5 minutes more until golden.
While the chicken and King Edwards roast, make the spring onion gravy. Get a large (26cm-30cm) frying pan. Add the pale section of the sliced spring onions, 1 tsp jerk spice and 4 tbsp water. Sweat over a medium heat for 3-4 minutes until the spring onions soften. Add the orange juice. Boil to reduce by half. Add the HP sauce and 3 tablespoons water. Bring to the boil, it should be thick enough to lightly coat the back of a spoon, if not boil it for a little longer. Stir in the butter, season to taste, you may need a little sugar to balance the acidity. Take the pan off the heat.
Once the chicken breasts are cooked, transfer them to the sauce to rest for 5 minutes. Put the potatoes back into the oven during this time if they need a little more cooking.
Heat up the sauce and chicken breasts. Brush the chicken with some of the sauce. Mix the dark green sliced spring onion, orange zest and chilli together. Sprinkle them over the chicken and King Edwards.
The chicken breasts and sauce freeze very well so feel free to make double and freeze half. The gravy can be made up to a day ahead.
700g of Fluffy potatoes such as King Edward
4 skinless chicken breasts
2 tsp jerk spice
1 tbsp vegetable oil, plus a little for brushing the chicken
1 bunch spring onions, keep the pale and dark parts separate
4 tbsp water
200ml orange juice, from a carton is fine
4 tbsp HP sauce
Zest of 1 orange removed with a zester
1 large mild red chilli, de-seeded and finely diced
Salt, sugar and jerk spice to taste