Prepare the Meatballs:
Preheat oven to 400°F (200°C). In a large bowl, mix ground chicken, ricotta, Parmesan, breadcrumbs, egg, garlic, Italian seasoning, salt, and pepper until just combined. Do not overmix.
Shape and Bake:
Form into 1½-inch meatballs and place on a parchment-lined baking sheet. Brush tops with olive oil. Bake for 20–22 minutes, or until golden and cooked through (internal temp 165°F/74°C).
Make the Spinach Alfredo Sauce:
While the meatballs bake, melt butter in a skillet over medium heat. Sauté garlic for 30 seconds. Pour in cream and bring to a gentle simmer. Stir in Parmesan and cook until smooth. Add chopped spinach and simmer until wilted (about 2–3 minutes). Season with salt, pepper, and nutmeg if using.
Serve:
Spoon the spinach Alfredo sauce onto plates or over pasta. Top with warm chicken ricotta meatballs and garnish with extra Parmesan or parsley if desired.