Preheat the oven to 180°C (350°F). Prepare a large baking sheet lined with baking paper.
Combine all the dry ingredients together in a bowl and slowly add the water, mixing until a dough forms.
Place the dough on the baking tray and using your fingers, press it out to an even layer ¼ inch (5mm) thick. If it breaks up just press it back together.
Using a sharp knife, score the dough into the desired cracker shapes as this helps them to break smoothly once they are baked and cooled.
Bake the crackers in the oven for 30-35 minutes. Remove the tray from the oven and set aside to cool completely before breaking into individual crackers.
Notes
Crackers can be stored in an airtight container for up to 2 weeks.The chia seeds can be swapped out for other seeds, such as pumpkin, sunflower or sesame.You can experiment with other herb and spice combinations too, like garlic granules or mixed herbs.