Arrange 5 strips of the bacon in parallel rows on a baking sheet lined with parchment, the edges of the slices touching but not overlapping. Working with 1 strip at a time, arrange the remaining strips perpendicular to the first ones, weaving the strips over and under to form a lattice.
Spray an 8-inch square baking dish with cooking spray. Roll the puff pastry into a 12-inch square and press into the bottom and up the sides of the prepared dish. Trim the edges that overhang with a paring knife. Whisk the eggs, half-and-half, cheese, 1 teaspoon salt and a few grinds of black pepper in a large bowl until well combined. Pour into the puff pastry shell. Bake the bacon lattice and the eggs until the bacon is just starting to crisp and the eggs are still jiggly in the center but slightly set, about 15 minutes.
Use two spatulas to lift the bacon lattice and place it on top of the eggs. Continue baking until the bacon is golden brown and crisp and the eggs are set, about 25 minutes. The eggs will be very puffy (they will deflate as the pie rests). Let sit for 10 minutes before serving.
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