In a mixing bowl, combine ground chicken, half the bread crumbs, grated onion, minced garlic, and egg.
Add salt, black pepper, and the remaining bread crumbs. Mix until well combined.
Shape the mixture into 4 evenly sized burger patties.
Heat olive oil in a skillet or grill pan over medium heat.
Place patties on the pan and cook for 5–6 minutes per side, or until golden brown and cooked through.
Avoid flipping too early to keep patties intact and crispy.
Remove and let rest for 2 minutes before serving.
Serve with buns, lettuce, tomato, or wrap in lettuce for a low-carb option.