Preheat the oven – Preheat to 250°F (120°C).
Mix dry ingredients – Combine Chex cereal, pretzels, crackers, and nuts in a large bowl.
Make the sauce – In a separate bowl, mix melted butter, soy sauce, sugar, and garlic powder.
Coat the mix – Pour the sauce over the cereal mixture and toss gently until evenly coated.
Add furikake – Sprinkle furikake seasoning and stir well for even coverage.
Bake – Spread the mixture evenly on a baking tray. Bake for 45–60 minutes, stirring every 15 minutes to ensure crispiness.
Cool and serve – Allow to cool completely before serving or storing in an airtight container.