How to Make It
Preheat oven to 375°F. Lightly coat a rimmed baking sheet with cooking spray. Sprinkle salmon fillets evenly with salt.
Stir together mustard, honey, mayonnaise, paprika, and garlic powder in a small bowl. Spread mixture evenly over fillet tops and sides. (Do not spread over skin sides.) Stir together pecans and panko in a separate small bowl. Working with 1 fillet at a time, dredge fillets in pecan mixture to coat tops and sides. (Do not coat skin sides.) Arrange fillets, skin side down, in an even layer on prepared baking sheet; lightly spray with cooking spray.
Bake in preheated oven until a thermometer inserted in thickest portion of fillets registers 120°F, 12 to 14 minutes, or until desired degree of doneness.