1. Preheat the oven to 180 degrees Celsius.

2. Slice the chicken breast horizontally to create a pocket.

3. In a bowl, mix together the cheddar, feta, and cream cheese. Season with herbs and spices to taste.

4. Stuff the cheese mixture into the pocket of the chicken breast and secure with toothpicks.

5. Place the stuffed chicken breast pieces in a baking dish.

6. In a separate bowl, mix together the milk, chicken stock, and cream. Season with salt and pepper.

7. Pour the milk mixture over the stuffed chicken breast pieces.

8. Cover the baking dish and bake for approximately 30 minutes.

9. After 30 minutes, remove the cover and sprinkle bread crumbs over the chicken breast pieces.

10. Bake for an additional 10-15 minutes until the chicken breast is golden brown and the filling is melted.

11. Serve with potatoes or rice and enjoy!