Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper or use a silicone baking mat for easy cleanup.
In a large mixing bowl, combine the ground chicken, ricotta cheese, grated Parmesan cheese, breadcrumbs, room-temperature egg, minced garlic, dried oregano, dried basil, a generous pinch of salt, freshly ground black pepper, and the chopped fresh parsley.
Using your hands, a spatula, or a spoon, gently mix the ingredients until they are just combined. Take care not to overmix; you want the meatballs to be tender.
With slightly damp hands, form the chicken mixture into 1-inch meatballs, placing each on the prepared baking sheet, ensuring they are spaced about one inch apart to allow for even cooking.
Bake the meatballs in the preheated oven for 20-25 minutes, or until they are fully cooked (reaching an internal temperature of 165°F or 74°C) and have a slightly golden-brown exterior.
While the meatballs are baking, heat the marinara sauce in a small saucepan over low heat, stirring occasionally to prevent sticking.
Once the meatballs are cooked, remove them from the oven and serve them hot. Drizzle the warm marinara sauce over the meatballs, or serve it on the side for dipping.
Notes
Serve with garlic bread or a fresh side salad for a complete meal.