Preheat oven to 400 degrees.
In a saucepan, heat the water and butter until boiling.
Reduce heat to low and stir in the flour until a soft ball forms.
Remove from heat and stir in eggs, one at a time, until smooth and shiny.
Stir in swiss cheese.
Lightly grease a baking sheet and drop rounded teaspoons of dough two inches apart.
Bake for 25-30 minutes or until golden brown. While baking, prepare filling.
Let cool for 30 minutes.
Cut balls in half width wise.
Place chicken filling on bottom half and then replace top.