On a sheet pan, lightly spray the panko with oil.
Toast the panko breadcrumbs in the oven at 375°F (190°C), for 7-8 minutes or until they're golden.
To make the egg mixture, combine the egg with mayonnaise, dijon mustard, flour, smoked paprika, garlic powder, salt, and pepper. Whisk until it's well combined.
Dip the chicken tenders in the egg mixture until they're well coated, then dredge in toasted panko and press the tenders in the panko so that it sticks well.
Arrange the breaded tenders on a sheet pan (I like to use a rack so they cook evenly - optional).
Bake in the oven at 400°F (200°C) for 15-17 minutes depending on the size of the chicken tenders used.