Prepare Batter: In a large bowl, combine grated potatoes, onion, eggs, flour, chopped chicken tenderloin, salt, and pepper. Mix well until all ingredients are evenly incorporated.
Fry Pancakes: Heat oil in a skillet over medium heat. Spoon the batter into the pan and press gently to form flat pancakes. Cook for about 3-4 minutes on each side or until golden brown and crispy.
Serve: Remove pancakes from the skillet and drain on paper towels to remove excess oil. Serve hot with sour cream or your favorite dipping sauce.