Peel and finely dice the onion and garlic. Chop the tomatoes in the tin with a long knife. Heat 1 tablespoon of oil in a pan, fry the onion and garlic over medium heat for about 8 minutes until golden brown.
Add tomatoes and vegetable stock. Season with salt, pepper and sugar and simmer gently for about 15 minutes. Meanwhile cook the pasta in boiling salted water for about 10 minutes. 5 minutes before the end of cooking time, add peas and cook.
Wash the basil, dab dry, pluck the leaves from the stems and cut into strips. Wash the chicken filet, dab dry and cut into strips. Season meat with salt and pepper. Drain noodles and peas and let them drain.
Heat 1 tablespoon of oil in a frying pan. Fry the chicken for about 5 minutes until golden brown. Add the chicken fillet and basil strips to the tomato sauce and mix. Arrange noodles with sauce on plates. Sprinkle with coarsely ground pepper and garnish with basil leaves.