Start by preheating the oven to 350 degrees.
Spray a 12-cup muffin pan with cooking spray or line it with silicone or parchment liners and set aside.
Over medium-high heat, cook the sausages in a large skillet until no longer pink. As they cook, break the sausage up, with a spatula, into small pieces.
If needed, drain slightly, and then divide sausage crumbles among the 12 muffin cups.
In a large bowl, whisk together eggs, milk, garlic powder, onion powder, salt, and pepper until all ingredients are combined.
Pour the egg mixture evenly over the chicken sausage. Lightly stir the sausage and eggs together.
Sprinkle cheese evenly over muffin cups.
Cook for 20 – 23 minutes or until the eggs are set. Serve hot.