Preheat your oven to 400°F. Line a baking sheet with parchment paper.
In a large bowl, combine the ground chicken, breadcrumbs, 1/4 cup Parmesan cheese, parsley, rosemary, garlic powder, onion powder, salt, pepper, egg, lemon zest, and lemon juice. Mix until just combined.
Using your hands, form the mixture into meatballs, about 1 inch in diameter. Place the meatballs on the prepared baking sheet and drizzle with olive oil. Bake for 20-25 minutes, or until cooked through and golden brown.
While the meatballs are baking, bring a medium pot of chicken broth to a boil. Add the orzo and cook according to package instructions, usually about 8-10 minutes.
Once the orzo is cooked, reduce the heat to low and stir in the heavy cream, frozen peas, and 1/4 cup Parmesan cheese. Season with salt and pepper to taste. Cook for an additional 2-3 minutes until heated through.
Serve the meatballs over the creamy orzo, garnished with fresh parsley.