Cook pasta per instructions; drain & cut into small pieces.
Lay pie crust on a flat floured surface. Cut out your tops using a ramekin.
Preheat oven to 425 degrees.
In a medium pot, bring chicken broth to a boil. Place peas and carrots in broth for 2 minutes.
Set a side the peas and carrots and save broth.
Melt butter in a skillet. Add flour & cook 1/2 minute. Add the milk and cream. Mix until smooth.
Add the remaining chicken broth used for peas and carrots. Bring to a simmer.
Add salt & pepper to taste.
After sauce has thickened, add chicken, peas and carrots, leeks, pasta, and chives.
Spray the ramekins with a cooking spray lightly.
Divide mixture between ramekins and top with crust circles pressing to edges.
Cut vent holes in the tops of the crusts.
Brush tops of each crust with beaten egg.
Bake until golden brown & bubbly about 15-20 minutes.
Cool, Serve, and Enjoy.