Preheat oven to 400 degrees F and spray a baking sheet with non-stick spray or line with parchment paper.
In a shallow, square container combine panko through paprika. Place milk in another shallow container or dish.
Dip chicken into milk, then into crumb mixture, pressing down gently to make sure the crumbs adhere to the chicken. Flip the chicken and coat the other side in the crumbs. Place on baking sheet.
Bake for 15 minutes, then flip the chicken. Bake another 10 minutes or until a meat thermometer reads 165 degrees F and coating is lightly golden.
While the chicken is baking, prepare the sauce. In a medium pan, melt the margarine or butter. Whisk in flour and cook 1 minute.
Whisk in broth, milk, pesto and salt and cook over medium heat, stirring often, until thickened. Remove from heat and serve over chicken.