Preheat oven to 400°F (200°C) and grease a 12-inch pizza pan.
In a large skillet over medium-high heat, cook the breakfast sausage until browned and crumbled.
Sprinkle the flour over the cooked sausage and fat, stirring constantly for 2 minutes to cook the flour.
Gradually whisk in the milk and bring to a simmer, stirring until the gravy thickens; season with salt and pepper.
Flatten and join the biscuit dough pieces to cover the pizza pan, pressing the edges to form a crust.
Spread the sausage gravy in an even layer over the biscuit dough base.
Distribute the scrambled eggs evenly over the gravy layer.
Sprinkle the shredded cheddar cheese over the top.
Bake for 12 to 15 minutes or until the biscuit crust is golden brown and the cheese is bubbly.
Garnish with chopped green onions and slice into wedges.