Preheat the oven to 350°F. Place the frozen pie shell on a baking sheet. Set aside.
In a medium size mixing bowl whisk together the eggs, cream, mayonnaise, garlic salt, onion powder, Dijon, and black pepper until fully combined.
Fold in the broccoli florets, green onion, bacon and 1 cup shredded cheese. Pour into the pie shell.
Sprinkle the top with the remaining 1/2 cup shredded cheddar cheese.
Bake for 50-60 minutes or until the center is set when gently shaken. Cover the edges of the crust with aluminum foil if needed, to prevent over browning.