Skillet Chicken Pot Pie - Jo Cooks

Ingredients

• 1 tablespoon olive oil
• 1 medium onion (chopped)
• 2 stalks celery (chopped)
• 1 pound chicken breasts (skinless boneless and chopped)
• ½ teaspoon salt (or to taste)
• ¼ teaspoon pepper (or to taste)
• ¼ teaspoon red pepper flakes
• 1 teaspoon thyme (fresh)
• 2 cups frozen peas and carrots
• 2 medium potatoes (peeled and diced)
• 10½ ounce cream of mushroom soup (1 can)
• ½ cup chicken broth (low sodium, add more if needed)
• 1 tablespoon parsley (fresh, chopped)
• 1 sheet puff pastry
• 1 large egg (for egg wash)