1. Preheat the oven to 200 degrees Celsius.

2. Slice the fresh onion and leeks into thin rings.

3. Dice the fresh tomatoes into small pieces.

4. Cut the boneless chicken breast into bite-sized pieces and season with salt, pepper, and herb seasoning.

5. Cook the egg noodles according to package instructions and drain.

6. Heat some butter in a pan and sauté the onion rings, leeks, and tomato pieces.

7. In a separate pan, melt some butter and fry the breaded chicken pieces until golden brown.

8. Add the fried chicken pieces to the vegetables in the pan and mix well.

9. Add the drained egg noodles to the vegetables and chicken, and mix everything together.

10. Bake the dish in the preheated oven for about 15 minutes until golden brown.

11. Garnish with fresh parsley and serve.