Slice the peppers into thin strips. Finely slice the onion, chop the garlic and the parsley stalks. Drain the capers.
Heat the oil in a lidded frying pan .Add the peppers and onion, season with salt, then cover and cook over a low heat for 15 minutes. Add the garlic, parsley stalks and capers and cook for a further 5 minutes or so, until the vegetables are soft.
Chop the parsley leaves.
Add the honey, vinegar and parsley leaves to the pan. Stir well, put on the lid and cook for another minute. Turn off the heat.
Meanwhile, cook the pasta following the instructions on packaging.
Drain it and toss it with the peperonata, then serve with some grated cheese and freshly ground pepper, if you like.