Preheat the oven to 375°F. Lightly spray the bottom and sides of a quiche pan or tart pan with non-stick cooking spray. Place onto a sheet pan. (This makes it easier to move in and out of the oven.)
Bring pie dough to room temperature per the package instructions. Fit into the prepared pan. Dock the bottom with a fork. Cover with a piece of parchment paper and fill with pie weights or dry beans. (to prevent puffing up) Bake for 10 minutes. Remove to a wire rack while you make the filling. Lower the oven temperature to 350°F.
In a large skillet, fry the bacon over medium-high heat until crispy. Remove to paper towels to drain, reserving 1-2 tablespoons bacon grease in pan.
To the skillet add the onion and bell pepper. Cook for 2-3 minutes just until softened and beginning to brown, then add the spinach. Sauté for 1-2 minutes or just until wilted and liquid has evaporated. Remove skillet from the heat.
In a large bowl, use an electric mixer to beat the half and half, eggs, chives, salt, black pepper, granulated garlic and onion powder. Beat on medium-high speed for 1-2 minutes until light and frothy. (You can also do this by hand with a whisk).
Assemble the Quiche: Arrange cooked bacon on bottom of crust. Top with 1 cup cheddar cheese, and vegetable-spinach mixture. Pour the egg custard evenly over the vegetables, then sprinkle with reserved 1/2 cup cheese.
Bake for 40-50 minutes or just until puffy and the center is set when gently shaken.
Remove to a wire rack to cool for 15 minutes, then slice and serve.