Preheat the broiler and move a rack to the top of the oven. Line a baking sheet with foil.
Place 1/4 cup of the chocolate chips in a small microwaveable bowl and cook for 45 seconds, stirring halfway through. Stir in the chocolate-hazelnut spread and mix until combined and uniform in color. Spread 2 tablespoons of the melted chocolate on each rice cake. Place 5 marshmallow halves on each rice cake, then transfer the rice cakes to the prepared baking sheet.
Broil the s'mores for 45 seconds to 1 minute, rotating the baking sheet 180 degrees halfway through the cooking time. The marshmallows should be nice and toasted. Remove the baking sheet from the oven. Sprinkle the remaining 2 tablespoons chocolate chips on each while still warm, then cool for 5 minutes. Drizzle the honey over the top and serve.
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