In a large bowl, combine ground chicken, breadcrumbs, salt, pepper, 2 cloves garlic, and egg. Scoop mixture into 1-in meatballs and place on a baking sheet.
In a large skillet over medium-high heat, heat 2 tablespoons oil and swirl pan to evenly coat. Add meatballs to pan and sear on all sides, turning occasionally with a tongs until meatballs are golden brown. Transfer meatballs to a clean plate and set aside.
Heat remaining 1 tablespoon vegetable oil over medium-high heat in pan drippings and swirl to coat pan. Add sweet pepper and snow peas and saute 3-4 minutes until crisp-tender.
Add peanut satay sauce and meatballs to skillet, gently fold, and bring to a simmer over medium-high heat. Reduce heat to low, cover pan, and allow to simmer 5-10 minutes, stirring occasionally until meatballs register 165F.
Season sauce with salt and pepper to taste if needed and serve meatballs with green onions and peanuts on top over hot rice. Enjoy!