Cut the boneless skinless chicken breasts into four pieces.
In a wide, shallow bowl mix together panko, Italian breadcrumbs, garlic powder and grated Parmesan. Set aside.
Melt butter in the microwave in a wide, shallow bowl. Dip the chicken tenders in the melted butter.
Coat the chicken tenders in the breadcrumb mixture.
Place the coated chicken tenders on a large, rimmed baking sheet.
Bake at 400 degrees for 20-25 minutes, until cooked through.
Optional: Flip the chicken tenders over halfway through cooking to help brown both sides. If the chicken tenders are sticking, use a thin, metal spatula/turner to flip the chicken tenders (making sure to scrape up the coating along with the chicken).
To brown the chicken tenders a bit more, put them under the broiler for a couple of minutes.