Preheat oven to 400°F. Generously grease a standard 12-cup muffin tin with cooking spray.
Place 3 tater tots in each muffin cup. Microwave for 2-3 minutes until slightly softened.
Use bottom of small glass to press tots into base and up sides of cups, forming nests. Bake for 10 minutes until golden.
Remove from oven and reduce temperature to 350°F.
In large bowl, whisk together eggs, milk, garlic powder, paprika, salt, and pepper until well combined.
Stir in 3/4 cup cheese, bell peppers, onion, and sausage (if using).
Divide egg mixture evenly among tater tot cups, filling each about 3/4 full.
Top with remaining 3/4 cup cheese.
Bake for 18-22 minutes until eggs are set and tops are lightly golden.
Cool for 5 minutes before carefully removing with small spatula. Garnish with fresh herbs and serve.