Cook the pasta according to packaging instructions, then drain and cover to keep it warm.
Meanwhile, chop the onion and chillies.
In a saucepan, heat 1 Tbsp oil, add the onion, chilli and pancetta and cook until the bacon is crispy and the onion is soft. Add the tinned tomato and bring to the boil.
Cut the kale into thin strips. Add these to the sauce, then put the lid on and simmer for 3-5 minutes. Taste and season with salt and pepper, if needed.
Serve the pasta with the tomato & pancetta sauce on top. Sprinkle some grated cheese on top if you like.