In a large bowl, combine chex, pretzels, and nuts. Mix and set aside.
Preheat oven to 250° and line a sheet tray with parchment paper.
In a small bowl, whisk together the coconut oil, coconut aminos, season salt, onion powder and garlic powder. Pour over the chex mixture and toss until evenly coated. A spatula works great for that.
Dump on the sheet tray and bake for 1 hour, stirring every 15 minutes.