Preheat the oven to 350 degrees F (175 degrees C). Lightly butter a baking dish.
Stir together melted butter and salt in a bowl.
Arrange chicken in the prepared baking dish. Brush butter mixture onto chicken until thoroughly coated, pouring any extra over chicken.
Bake in the preheated oven until no longer pink in the center and juices run clear, 30 to 45 minutes. An instant-read thermometer inserted into the center should read at least 165 degrees F (74 degrees C).