How to Make It
Line an 8-inch square baking dish with parchment paper. Mix chia and hemp seeds in a small bowl. Set aside 2 tablespoons seed mixture for topping.
Microwave chocolate chips on high until melted, about 90 seconds, stopping to stir every 30 seconds. Let cool slightly. Gradually add seed mixture and cereal to melted chocolate, stirring until combined.
Spread mixture into prepared baking dish and smooth the top. Tap bottom of dish firmly on a surface a few times to release any air bubbles.
Top with salt and reserved 2 tablespoons seed mixture. Refrigerate until set, about 30 minutes. Let stand at room temperature for 10 minutes before slicing into 24 bars (about 2½ by 1 inch each). Store tightly covered in the refrigerator for up to 2 weeks. Bring to room temperature before serving.