In a large bowl, combine the drained canned chicken and use a fork to shred it into smaller pieces.
Add the breadcrumbs, grated Parmesan cheese, chopped green onions, mayonnaise, beaten egg, garlic powder, onion powder, salt, and pepper to the bowl. Mix everything together until fully combined.
Form the mixture into small patties, about 2 to 3 inches in diameter. You should get around 8-10 patties depending on the size.
In a large skillet, heat about 1/4 inch of oil over medium heat. Once hot, gently place the patties in the skillet, ensuring not to overcrowd the pan.
Fry the patties for about 3-4 minutes on each side, or until golden brown and crispy. Depending on your skillet size, you may need to do this in batches.
Once cooked, use a slotted spoon to remove the patties and place them on a paper towel-lined plate to drain excess oil.
Notes
Serve warm with tartar sauce or salad. Garnish with green onions.