Preheat the oven to 170 C (340 F) and line two standard-size baking sheets with parchment paper.
In a medium mixing bowl, whisk together all the dry ingredients.
Pour the boiling water and oil over the seed mixture and stir until well combined.
Transfer the mixture to the prepared baking sheets splitting the mixture in half and, using a rubber spatula, spread it as thin and even a layer as possible. Be sure to make sure they are as thin as possible without creating any holes. Once they are set sprinkle them with pumpkin seeds and flaked salt.
Bake your crackers for 25 minutes and then switch your baking sheets (whatever tray was on the bottom to the top) and further bake for another 25 minutes or until they have become toasty in colour and are dry. I like to turn the oven off at 50 minutes and will allow them to sit in the oven until it's cooled.
Once cooled you can break them into any sized pieces you like. Enjoy right away or store in an airtightcontainer at room temperature for up to 1-2 weeks.