Preheat oven to 400°F. Add parchment paper to a rimmed cookie sheet.
In one bowl add flour.
In second bowl combine melted butter, lemon juice, lemon zest and minced garlic.
In a third bowl combine 1/2 cup Panko crumbs, pecans, Parmesan cheese, parsley, lemon pepper and garlic powder.
Coat each piece of chicken in flour, followed by lemon butter mixture, then Panko Parmesan mixture.
Place chicken on parchment paper and bake for 10 minutes.
Flip chicken and sprinkle with remaining Panko Parmesan mixture.
Add asparagus to sides of chicken, spray with olive oil and sprinkle with remaining 1/4 cup Parmesan cheese.
Cook for another 10-12 minutes or until chicken is thoroughly cooked.