01 - Preheat the oven to 375°F. Line a baking sheet with parchment paper.
02 - In a large bowl, whisk together flour, cornmeal, baking powder, chili powder, cumin, smoked paprika, garlic powder, onion powder, and salt until well blended.
03 - Add olive oil and water to the dry mixture. Mix until a cohesive dough forms. Add additional water 1 teaspoon at a time if the dough is too dry or crumbly.
04 - On a lightly floured surface, roll out the dough to 1/8-inch thickness. Ensure even thickness for uniform baking.
05 - Using a knife or pizza cutter, cut the dough into 1-inch squares. Alternatively, use a small cookie cutter for desired shapes.
06 - Transfer cut crackers to the prepared baking sheet, leaving slight space between each. Sprinkle with shredded cheddar cheese and dried oregano if desired.
07 - Bake for 12-15 minutes until golden brown and crisp. Crackers should feel firm to the touch.
08 - Let cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely. Store in an airtight container for up to one week.