Preheat oven to 400 degrees F. Line a baking sheet with foil and top with a baking rack and spray with cooking spray. (if no baking rack, just spray the foil with cooking spray). Set aside.
Combine the coating ingredients in three shallow containers (like pie tins): 1 - sift together all-purpose flour, paprika, garlic powder, salt and pepper; 2 - whisk together eggs and milk; combine panko breadcrumbs, sharp cheddar and Parmesan cheese.
Season chicken on both sides with kosher salt.
Set up an assembly line to coat the chicken as follows: flour mixture, then egg mixture, and finally cheese mixture. Set pieces in a single layer on the prepared baking rack or baking sheet. Chicken can be close together but should not touch. *Pro-tip - use one hand for wet and one hand for dry coating.
Bake chicken at 400 degrees for 15-20 minutes.or until golden. If you are not using a baking rack, turn the chicken tenders over after about 10 minutes. *For additional browning, turn on the broiler for a few minutes until golden.
Serve immediately with choice of dipping sauce.