Preheat the oven to 400°F. Spray a baking sheet with non-stick cooking spray.

In a large bowl, combine 1 pound ground chicken, 3 chopped green onions, 1 teaspoon garlic powder, ½ teaspoon kosher salt, ¼ teaspoon ground black pepper, 1 egg, and ¼ cup whole wheat breadcrumbs. Mix until just combined (use a spoon or your hands).

Divide the mixture and form 12 equal meatballs. Place the meatballs on the prepared baking sheet in a single layer, spaced apart.

In a separate bowl, toss 1 pound chopped broccoli with 1 tablespoon olive oil and salt and pepper to taste until evenly coated.

Add the broccoli to the baking sheet, arranging it in a single layer around the meatballs without overcrowding.

Bake for 20–25 minutes, or until the meatballs reach an internal temperature of 165°F and the broccoli is tender.

Remove from the oven and let rest a few minutes before serving.