Preheat your oven to 400°F and line a large baking sheet with parchment paper.
In a large mixing bowl, combine the non-fat Greek yogurt, self-rising flour, liquid egg whites, and nutritional yeast until a shaggy dough forms.
Transfer the dough to a lightly floured surface and knead for 1-2 minutes until the dough is smooth and no longer sticky.
Divide the dough into 6 equal portions and roll each portion into a long rope, approximately 8 inches in length.
Arrange the breadsticks on the prepared baking sheet, leaving space between each one.
Lightly brush the tops of the breadsticks with the extra virgin olive oil.
In a small bowl, whisk together the grated parmesan, garlic powder, dried oregano, sea salt, and black pepper.
Generously sprinkle the parmesan seasoning over the breadsticks, pressing down lightly to ensure the topping adheres.
Bake for 12-15 minutes, or until the breadsticks are golden brown and have a firm, crispy exterior.
Allow to cool for 2 minutes before serving warm.