Step 1: Preheat your oven to 400°F (200°C).
Step 2: In a large mixing bowl, combine the ground chicken, chopped green onions, garlic powder, kosher salt, ground black pepper, egg, and whole wheat breadcrumbs. Mix until well combined.
Step 3: Form the mixture into meatballs about 1.5 inches in diameter and place them on the sheet pan.
Step 4: In a separate bowl, toss the chopped broccoli with olive oil and season with salt and pepper.
Step 5: Add the seasoned broccoli to the sheet pan, distributing it evenly around the meatballs.
Step 6: Bake for 20-25 minutes, or until the meatballs are cooked through and the broccoli is tender.
Step 7: Serve hot, perhaps over rice or quinoa.