Wash the peppers, remove the seeds and cut into fine rings. Peel and finely chop the onion. Pluck basil leaves from the stems and chop or chop the stems finely. Drain the tuna
Heat 2 tablespoons of olive oil in a tall frying pan. Sauté the onion, pepperoni, cinnamon and basil stems for 4-5 minutes while stirring. Add the tomatoes and chop coarsely with a spatula. Season with salt and pepper and simmer for 15-20 minutes at medium heat. Add the tuna to the sauce about 5 minutes before the end of the cooking time and simmer
Cook the pasta in plenty of boiling salted water according to the package instructions. Cut basil leaves into strips, except for a little to garnish. Wash the lemon hot, dab dry and finely grate the peel. Squeeze lemon
Pour the pasta onto a sieve, collecting approx. 1/8 litre of pasta water. Put the noodles back into the pot with the collected noodle water. Add lemon juice and zest, 4 tbsp. olive oil, basil and parmesan and mix briefly. Then add the tuna sauce, mix well and season with salt and pepper. Arrange the pasta in deep plates, garnish with lemon and basil