Preheat the oven to 400°F (200°C). Line a baking sheet with parchment paper.
In a large mixing bowl, combine the ground chicken, ricotta cheese, chopped spinach, grated Parmesan, breadcrumbs, egg, minced garlic, dried herbs, salt, and black pepper. Mix until all ingredients are well combined.
Using your hands, form the mixture into meatballs, approximately 1.5 inches in diameter. Place them evenly spaced on the prepared baking sheet.
Bake the meatballs in the preheated oven for 20 minutes, or until they are cooked through and golden brown.
While the meatballs are baking, warm the marinara sauce in a large skillet over low heat.
Once the meatballs are done, gently add them to the marinara sauce and let them simmer for 5 minutes to absorb the flavors.
Serve the meatballs warm, with additional marinara sauce and your choice of pasta or on their own.