Preheat oven to 400°F (200°C). Spray a 12-cup muffin pan with cooking spray.
In a large bowl, mix ground chicken, egg, salt, pepper, garlic powder, onion powder.
Romano cheese (reserve 1 tablespoon), and breadcrumbs.
Add water if mixture feels dry.
Divide mixture into muffin cups. Press to smooth tops. Bake for 20 minutes.
Remove from oven. Top each with 1 tablespoon marinara and 1 tablespoon mozzarella.
Return to oven for 10 more minutes.
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