Whisk together eggs, heavy cream, red pepper flakes, garlic powder, salt, and pepper.
In a skillet over medium-high heat, cook Smithfield Anytime Favorites Diced Ham, diced onions, and mushrooms in olive oil. Season to taste with kosher salt, black pepper, and garlic powder. Cook until mushrooms are tender and mixture has a nice color, roughly 8-10 minutes.
Dock the bottom of the thawed pie crust with a fork and baste the bottom and sides of the pie shell with dijon mustard. Place an even layer of the ham, mushroom, and onion mixture in the bottom. Top with white cheddar cheese and then fill the pie shell with the egg + cream mixture.
Bake for roughly 30 minutes or until the top has browned and a toothpick comes out clean from the middle. Garnish with chives and enjoy!