Peel and finely dice the shallots. Fry in 2 tablespoons of hot oil until translucent. Drain tuna, pluck coarsely with a fork and fry briefly. Add fish stock and cream. Coarsely chop the olives.
Add olives, capers and lemon juice and simmer for 10 minutes. Cook pasta in boiling salted water for 8-10 minutes. Bring sauce to the boil, stir in sauce thickener. Season to taste with salt and pepper. Pluck the oregano leaves from the stalks and add to the sauce. Clean and wash the zucchini. First cut lengthwise into thin slices, then into thin strips. Drain the pasta and chill in cold water. Heat the remaining oil in a large frying pan. Fry the zucchini strips briefly.
Clean and wash the zucchini. First cut lengthwise into thin slices, then into thin strips. Drain the pasta and chill in cold water. Heat the remaining oil in a large frying pan. Fry the zucchini strips briefly. Add the noodles and mix. Add sauce