Preheat oven to 400°. Line rimmed baking pan with foil; spray with cooking spray. Sprinkle both sides of chicken tenders with rub; let stand 15 minutes.
In wide, shallow dish, whisk egg and buttermilk; in separate wide, shallow dish, stir quinoa and flour.
Dip tenders in egg mixture, then in quinoa mixture to coat, patting lightly so mixture adheres; place on prepared pan and spray with cooking spray.
Bake tenders 20 minutes or until lightly browned and crisp and internal temperature reaches 165°, turning once; serve with dressing. Makes about 12 tenders.
Serving Size 3 tenders
Servings 4
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.