Preheat the oven to 400°F (200°C) and line a baking sheet with parchment paper.
In a large mixing bowl, combine the ground chicken, breadcrumbs, parsley, dill, oregano, garlic, feta, egg, lemon juice, salt, and pepper. Mix gently until everything is just combined.
Shape into 18–20 evenly sized meatballs, about 1½ inches each.
Arrange the meatballs on the prepared baking sheet and lightly brush or drizzle with olive oil.
Bake for 18–20 minutes or until the Greek Chicken Meatballs reach an internal temperature of 165°F (74°C) and are lightly golden.
Meanwhile, bring the chicken broth to a boil in a saucepan.
Add the orzo, reduce heat, cover, and simmer for 10–12 minutes until tender and the broth is absorbed.
Remove from heat and stir in the fresh lemon juice and olive oil. Fluff gently with a fork.
Spoon the lemon orzo onto serving plates.
Top with warm meatballs and garnish generously with chopped parsley and extra feta.
Serve immediately with lemon wedges if desired.