Line a muffin pan with paper liners or coat with non-stick spray. In a saucepan over medium heat, combine the peanut butter, honey, and salt, stirring until the mixture is completely melted and smooth. Transfer the rice cereal to a medium bowl and pour the warm peanut butter blend over it. Mix thoroughly to ensure even coating. Fill each muffin liner about two-thirds full with the cereal mixture, pressing down firmly to compact. In a microwave-safe bowl, melt the chocolate chips until smooth, stirring between intervals. Spoon the melted chocolate over each cereal-filled cup to create a rich topping. Chill the tray in the refrigerator until the chocolate has fully set. Serve once firm.