Pre-heat the oven to 350 Degrees. Line a sheet pan with parchment paper and set aside.
Place panko breadcrumbs in a Ziploc bag, flatten to let the air out, and close it tightly. Using a pastry roller, roll the breadcrumbs to break them apart into smaller pieces.
Place panko in a large bowl. Stir in salt, garlic powder, onion powder, and black pepper.
Add in the cheddar and give it a toss.
Give the egg whites a quick whisk and place in another bowl.
Dip each chicken breast tenderloin first into the egg mixture and then into the panko-cheddar mixture. When it is in panko mixture, press gently to make sure that it sticks to the chicken.
Transfer to the baking sheet lined with parchment paper.
Repeat the same process with the rest of the chicken breast tenderloins.
Bake for 35-40 minutes or until the crust turns golden brown.