Preheat oven to 425 F. In a large mixing bowl, whisk together the flour, nutritional yeast, salt and baking powder.
Add the wet ingredients and stir together until the dough is blended enough to start kneading with your hands.
Stir the dough with a wooden spoon until it comes together enough to knead by hand.
Knead the dough well by hand to combine everything. The dough should be dense, but smooth.
Split it into four equal pieces. Roll them into balls. Spritz them lightly with oil to keep them from drying out.
Working with one portion at a time, roll one portion of dough out thin, between two pieces of parchment.
Using a knife or pizza wheel, cut the crackers to the your desired shape and size.
For better, more even baking, poke the crackers with a fork.
Gently lift the cut crackers with a spatula and place on a parchment lined cookie sheet.
Spritz lightly with an oil sprayer.
Bake for about 10 minutes, or until they are fully cooked. If you find that the remaining dough starts to dry out or get too crumbly, simply spritz with a bit more oil and work it into the dough.
Allow just-baked crackers to cool completely and serve.
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Notes
Please note that the nutrition data given here is a ballpark figure. Exact data is not possible.