Slice the chilli pepper as finely as you can. If you want to reduce the heat remove the seeds.
Cut the tomatoes into 4-5mm (¼") thick slices.
Heat a 20cm or 8" saucepan of well-salted water to a boil. I use 1½ teaspoons of salt in a pan this size.
Boil your pasta for 1 minute less than it says on the packet. For bucatini, this is typically 8 or 9 minutes.
Heat a 30cm or 12" frying pan over a medium-high heat, add the bacon lardons and fry until they begin to crisp and give off their fat. This should take around 5-6 minutes.
Add the chilli and cook for 1 minute.
Pour in the white wine and reduce until reduced by half.
Add the tomato passata and half of the Pecorino cheese and stir.
By now, you should be ready to drain the pasta, reserving a little (75ml or ⅓ cup) of the cooking liquid.
Add the pasta to the sauce and toss to coat.
Add the sliced tomatoes and 2 tablespoons of the cooking liquid, stir and cook for a final minute.