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.
Allow to cool to warm before cutting.