1. Cook the spaghetti in a large pot of salted boiling water until al dente.

2. While the spaghetti is cooking, cut the chicken breast into small pieces and season with salt and pepper.

3. Heat a pan with some oil and fry the marinated chicken until golden brown and cooked through.

4. Dice the fresh tomatoes and add them to the fried chicken. Let simmer for about 5 minutes until the tomatoes are soft.

5. Drain the cooked spaghetti and add it to the chicken and tomato mixture. Toss well to combine the flavors.

6. Season with salt, pepper, and any additional desired spices. Garnish with fresh basil.

7. Serve the spaghetti with fresh tomatoes and chicken warm.