Start by boiling a pot of water.
Add a pinch of salt and the pasta.
Cook until al dente, usually around 8-10 minutes.
In the meantime, in a blender, combine chillies, basil, half of the olive oil, pine nuts, garlic, parmesan cheese, and a squeeze of lemon juice.
Blitz until you get a smooth paste. This is your chilli-pesto!
In a pan, heat the remaining olive oil.
Add the chilli-pesto and stir for 2-3 minutes, letting the aroma fill your kitchen.
Once the pasta is cooked, drain it and keep aside a cup of pasta water.
Mix the pasta into the pan with chilli-pesto, adding pasta water as needed to achieve the desired consistency.
Garnish with lemon zest and serve hot.