Preheat your oven to 400°F (200°C).

Line a baking sheet with parchment paper.

In a mixing bowl, combine the all-purpose flour, cornmeal, salt, baking powder, garlic powder, onion powder, and chili powder.

Stir in the vegetable oil and water until combined.

If using, fold in the shredded cheese.

On a floured surface, roll out the dough to about 1/8 inch thick.

Using a knife or pizza cutter, cut the dough into squares or desired shapes.

Place the cut crackers on the prepared baking sheet and bake for 15-20 minutes until golden brown.