Heat oven to 375 degrees. Take pie crust from freezer, to thaw and place on a baking sheet for easy handling. Sprinkle cheddar (4 ounces), mozzarella and Parmesan cheese on bottom of pie crust. Set aside.
In a medium size bowl, whisk together eggs, half & half and sour cream until frothy. Add in garlic powder, parsley, chives, salt and pepper and whisk. Pour egg mixture over cheeses. Sprinkle remaining cheddar cheese on top and place in oven.
Bake for approximately 40 to 45 minutes until top of quiche is golden brown and center is set. Remove from oven and serve immediately
TO FREEZE - follow instructions and cook for 35 minutes until center of quiche is barely set. Remove from oven and let cool. Wrap quiche with foil, then place in a ziptop back and freeze. When ready to reheat, let quiche thaw in refrigerator then place in oven, set at 350 for 15 minutes.