Heat the oil in a frying pan and gently cook the garlic, just when it starts to become golden, add the chilli, olives and capers cook for 1 minute then add the passata and stir.
Pour the boiling water into a large saucepan and cook the pasta according to the pack instructions.
Lay the salmon fillets on top of the sauce, season with pepper and cover tightly with foil. Leave to gently bubble and steam for 8-10 minutes.
When the salmon is cooked, carefully lift out of the pan and set aside on a warm plate. When the pasta is cooked drain and return to the pan, add the rocket, along with the sauce. Stir well so it’s totally coated and the rocket is wilted. Taste to check the seasoning.
Divide the pasta between 2 plates, flake the salmon over the top and serve