How to Make It
Cook sausage and potatoes in a large nonstick skillet over medium-high, stirring often, until sausage browns and potatoes are lightly browned and slightly tender, about 10 minutes. Drain grease from skillet.
Lightly grease a 5- or 6-quart slow cooker with cooking spray. Spread sausage and potatoes in slow cooker. Whisk together eggs, milk, parsley, chives, salt, and pepper in a medium bowl; pour egg mixture over sausage and potatoes. Sprinkle evenly with Monterey Jack cheese. Cover and cook on LOW until set, about 2 1/2 to 3 hours.