Take pie crusts out of package. Turn the second tin upside down as it thaws.
While that it thawing mix together in a large bowl the shredded chicken, hashbrowns, peas & carrots, onion (opt) and gravy.
Add salt & pepper to taste.
When pie crust has thawed (15 minutes usually) add pot pie ingredients into pie tin with crust.
After that, take the upside down crust and gently place it on top of the pie carefully. Spread it out and pinch the two pie crusts together on the seams.
Cover and FREEZE if want this as a freezer meal,