Preheat oven to 350°F (180°C).
If making your own hummus, first drain and rinse chickpeas, saving 1 Tbsp of the chickpea water to add to your dough later.
In a food processor, add chickpeas, garlic, salt, and olive oil. Blend until smooth.
Transfer hummus to a large mixing bowl. Add flour and mix to combine, forming a dough ball.
Place dough on a flat surface, lined with parchment. Put another piece of parchment on top and use a rolling pin to flatten out dough (¼ inch thick or less).
Cut dough into circles. (I used a 2¼-inch round cookie cutter, you could also use the rim of a glass.) Re-roll leftover dough and continue to cut out cracker shapes until dough is used up.
Place cut dough shapes on a baking sheet, lined with parchment and lightly sprayed.
Prick the center of each cracker with a fork so they bake evenly.
Sprinkle on sesame seeds and press down gently with hands. Sprinkle on salt.
Bake 30-40 minutes, until golden.
Allow to cool on a wire rack.
Yields ~50 gluten free crackers.