Cheesy Breakfast Pizza

Preheat oven to 400 degrees F. In a large mixing bowl, combine hash browns, 2 eggs, and 1/2 cup cheddar and season with salt and pepper. Spray a baking sheet or pizza pan with cooking spray and add hash brown mixture. Using your hands, pat mixture into a circular crust. Bake until golden, 20 minutes. Meanwhile, in a large skillet over medium heat, cook bacon until crispy, 6 minutes per side. Transfer to a paper towel-lined plate. Drain, then crumble. Top baked crust with remaining 1 1/2 cups cheese and crack remaining 4 eggs on top. Scatter with crumbled bacon and season all over with salt and pepper. Bake until egg whites are set but yolks are runny, 15 minutes. (If you prefer a less runny yolk, bake 18 to 20 minutes.) Garnish with chives, slice, and serve.