Preheat the oven to 425 degrees F. Line a baking sheet with aluminum foil and place the wire rack on top.
In a small bowl, whisk together the seasonings - 1 tbsp Cajun Seasoning 1 packet Sazon 2 tsp Onion Powder1 tsp Garlic Powder1 tsp Old Bay1 tsp Smoked Paprika 1 tsp Kosher Salt Whisk until combined.
Pat chicken dry with a paper towel. In a large bowl, add mayo, egg, yellow mustard, and hot sauce. Whisk together to ensure everything is combined, then add chicken and seasoning blend. Mix everything together to ensure the chicken is fully coated. Set aside. 2 lbs Bone-In Chicken Thighs3 tbsp Mayonnaise1 large Egg1 tbsp Yellow Mustard1 tbsp Hot Sauce
In a large skillet over medium heat, melt butter. Once melted, add breadcrumbs and cook until the breadcrumbs turn golden brown, about 5-7 minutes, stirring frequently to prevent the breadcrumbs from burning. 5 tbsp Salted Butter2 1/2 cups Panko Breadcrumbs
Add breadcrumbs to a shallow bowl and add cajun seasoning. Mix together to ensure the seasoning is evenly dispersed. 1 1/2 tsp Cajun Seasoning
Remove the chicken from the marinade and let excess marinade drip off. Dip into the breadcrumbs on both sides. Press the breadcrumbs into the chicken to ensure it's fully adhered and place onto the wire rack on top of the baking sheet. Repeat with all of the chicken pieces. Spray with cooking spray just before placing into the oven.
Bake on the middle rack of the oven for 40-45 minutes, until the internal temperature of the chicken is 165 degrees F.