Cook the orzo pasta in a pot of boiling water until al dente, then drain and set aside.
In a mixing bowl, combine the ground chicken with the minced garlic, dried oregano, sea salt, and black pepper.
Form the chicken mixture into small, bite-sized meatballs.
Heat the olive oil in a large skillet over medium heat and brown the meatballs on all sides until golden.
Pour the chicken broth and lemon juice into the skillet, cover, and simmer for 5 minutes until the meatballs are cooked through.
Reduce the heat to low and stir in the Greek yogurt, lemon zest, and baby spinach until the spinach is wilted and the sauce is creamy.
Add the cooked orzo to the skillet and toss everything together to coat the pasta in the lemon-herb sauce before serving.