Black beans are one of the healthiest legumes you can eat.
In a powerful food processor, blitz the dried black beans for a few minutes until they turn into a fine flour.
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In a mixing bowl, combine bean flour, salt, chia seeds, cumin powder, garlic powder, oil, and water. Stir until you have a dense dough and then leave it to set for 10 minutes.
Thinly roll out the bean dough in between two sheets of baking paper. Sprinkle the mixture with seeds and slice it into triangle shapes.
Bake the chips for 30 minutes at 150°F (300°F), then flip them and toast them for a further 10 minutes. Allow the baked bean slab to cool down before cracking it into tortilla chips.