Preheat oven to 450 degrees. Line a sheet pan with foil (for easy clean up) and spray with cooking spray. Cut potatoes into wedges (I microwave them first for 2 minutes so they are a bit easier to cut), and place on baking pan.
Brush potato wedges with the egg white (this will help seasoning to stick, and help them get crispy!) Sprinkle seasoning evenly over potatoes. Bake for 12-15 minutes, or until they begin to get lightly golden brown and crisp. When finished baking, remove from the oven (but keep oven on).
Meanwhile, mix the hot sauce and chicken together in a small bowl, and toss to coat. (If you like things spicy, you may add more hot sauce if desired.)
Evenly distribute the chicken/hot sauce mixture over the fries. Top with both cheeses, and return the fries the oven for five minutes, or until cheddar cheese melts. Remove from the oven and top with Greek yogurt and chives/green onions if desired. Enjoy!