In a large bowl, combine shredded chicken, carrots, celery, potatoes, and peas.
Add cream of chicken soup and chicken broth; mix well.
Season with garlic powder, onion powder, salt, and pepper.
Transfer the mixture into the crockpot.
Cover and cook on low for 6-8 hours or high for 4 hours.
About 30 minutes before serving, preheat the oven to 425°F (220°C).
Roll out the pie crust and place it over the crockpot mixture.
Cut slits in the crust to allow steam to escape.
Bake for 15-20 minutes until the crust is golden brown.
Serve hot and enjoy your delicious meal!