Line a jellyroll pan with nonstick foil and preheat oven to 425.
Drizzle oil on chicken and season generously with salt/pepper.
Roast until chicken reaches internal temp of 165.
Let cool, then discard skin and shred chicken into bite sized pieces.
In a large pot, heat 1 T. olive oil
Saute onions, carrots, corn and peas (if using)
Melt butter and sprinkle in the flour.
Cook 1 minute.
Add broth and cream.
Stir to combine and simmer on low to thicken a bit and heat through.
Meanwhile, roll out the crescent dough.
Cut circle shapes with a cookie cutter and bake according to package directions.
Lay across pot pie filling right before serving!