In a large bowl, whisk together ½ cup buffalo wing sauce and egg. Add bread crumbs and stir to combine.
Add ground chicken and ranch seasoning and mix well.
Use a tablespoon to scoop balls of meat mixture. Roll balls between hands to form an even ball.
Heat oil in a large skillet. Add meatballs and brown each side.
Place browned meatballs in the bowl of a slow cooker. Top with remaining wing sauce.
Cook on low for two hours, stirring halfway through cook time.
Serve the meatballs with some ranch dressing for dipping. (Optional)
Notes
Put a little water on your hands before rolling the meatballs. This will stop the chicken mixture sticking to your hands and help you to make a solid round meatball.