Add onion, herbs, bell pepper, and carrot to a food processor and pulse to chop. If not using pre-minced garlic, include that in food processor as well.
Mix minced vegetables and herbs with meat and other remaining meatball ingredients.
Add oil to a large skillet and heat oil over low-medium heat. Roll meat mixture into 1" balls and drop them into skillet. Cook for 2-3 minutes on each side, until fully cooked in middle. Either use two pans or work in batches and add all meatballs back to pan at the end to re-heat.
Dipping Sauce
Add all ingredients to a food processor or blender and pulse to chop and combine. DO NOT use non-fat yogurt or your sauce will be runny! Adjust salt level to preference.