Preheat Oven to 425 degrees.
Preheat a a large skillet, at least 12 inches, over medium heat.
Once hot, add 2 tbsp of oil to the pan along with onions, carrots, & celery.
Season with salt, pepper, garlic, onion powder, thyme, and the bay leaf. Cook vegetables for about 5-8 minutes until soften, stirring occasionally.
Once vegetables have soften, add in garlic. Stir constantly for 30 seconds until garlic is fragrant.
Sprinkle flour over the vegetables. Stir and cook for about 2 minutes to get rid or raw flour taste.
Slowly whisk in broth to prevent lumps. Turn heat to medium high and bring mixture to a boil
Once boiling reduce heat to medium low and let simmer for 10 minutes, until thickened.
After 10 minutes, turn off heat and remove the bay leaf. Stir in frozen peas, chicken, and cream.
Remove biscuit from fridge, uncover and gently place on top. If using individual biscuits arrange them on top of the pot pie however you like.
Brush biscuit with beaten egg and transfer to a 425 degree oven. Bake for 18-25 minutes or until nicely golden brown on top.
Remove from oven and let cool for about 10 minutes before serving.