Preheat oven to 350 degrees F and get out a rimmed baking sheet. Set aside.
Place bacon in a large sauté pan, then cook over medium heat until crispy.
Remove bacon and drain on a paper towel, but leave the grease.
To the hot grease, add in onion, broccoli, garlic, 1/2 teaspoon salt, and 1/4 teaspoon pepper.
Cook, stirring regularly, for 5 minutes, or until the broccoli and onion start to soften. Drain any excess grease or liquid and set aside.
In a large bowl, whisk together half-and-half, eggs, remaining 1/2 teaspoon salt, and remaining 1/4 teaspoon pepper.
Whisk in bacon, veggie mixture, cheddar cheese, and parmesan until combined. Set aside.
Place frozen pie crust onto the baking sheet and pour in the filling.
Bake in preheated oven for 45-60 minutes or until a toothpick inserted in the center comes out clean. Cover the quiche for last 10 minutes of bake time if the crust is getting too brown.
Let stand 10 minutes, then cut and serve!
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