Line a baking sheet with foil; spray with cooking oil spray.
Pat the chicken dry with paper towels.
In a bowl, whisk the eggs with the Dijon mustard
Put the panko crumbs and fine dry breadcrumbs in a bowl and add the thyme, salt, parsley, pepper, and paprika.
Dip the chicken pieces in the egg mixture to coat thoroughly and then coat with the breadcrumb mixture. Arrange the chicken breasts on the prepared baking sheet. Drizzle the melted butter over the chicken breasts.
Bake for 25 to 35 minutes, depending on the thickness of the chicken breasts.