Bring a pot of water to the boil, add plenty salt, then add the pasta and simmer
Whilst the pasta simmers, finely chop the garlic, red chilli and parsley
A few minutes before the pasta is cooked, bring the olive oil up to temperature in a frying pan over medium heat
Add the garlic, chilli and anchovy fillets and stir gently and cook for 2 minutes. The anchovy fillets will dissolve in the hot olive oil as you stir.
Take a cup of the pasta water from the pot and add a little to the oil and garlic mixture in the pan
Drain the pasta and add to the frying pan and toss to emulsify the sauce
Add the chopped parsley and toss till combined adding more pasta water if needed.
Add to the plate and sprinkle with some fresh parsley and a squeeze of lemon juice before serving