Preheat oven to 375 degrees F. Coat a 9-inch x 13-inch baking dish with non-stick spray. Set aside.
Brown sausage in a large skillet over medium-high heat until browned all the way through, about 6 to 8 minutes. Be sure to break up the sausage as it cooks. Remove from heat and strain off grease. Set aside.
In a large mixing bowl, whisk together eggs, half-n-half, salt, pepper, onion powder, and paprika until fully incorporated. Add cheese and stir to combine. Set aside.
Open crescent rolls and roll according to package directions. Arrange 15 rolls in the prepared baking dish in three rows with 5 rolls in each row. Add sausage to the baking dish, spreading it evenly over the rolls. Pour the egg mixture over the rolls and sausage.
Bake for 25 minutes. Carefully remove from the oven. Allow to sit for 5 minutes. Sprinkle top with green onions, if desired. Serve warm.