Preheat your oven to 375°F (190°C) and lightly grease a small baking dish with a touch of olive oil.
Drain the extra firm tofu and press it between paper towels to remove excess moisture, then crumble it into small pieces in a large mixing bowl.
Wash the Swiss chard thoroughly, remove the tough stems, and finely chop the leaves.
Heat 1 teaspoon of olive oil in a skillet over medium heat and sauté the chopped Swiss chard until just wilted, about 2-3 minutes.
Add the sautéed chard, cooked quinoa, tomato puree, 3 tablespoons of the nutritional yeast, garlic powder, onion powder, sea salt, black pepper, and dried oregano to the bowl with the crumbled tofu.
Stir the mixture until all ingredients are thoroughly combined and the tofu is evenly coated in the tomato sauce.
Transfer the mixture to the prepared baking dish, smoothing the top with a spatula.
Sprinkle the remaining 1 tablespoon of nutritional yeast and the hemp hearts evenly over the top of the casserole.
Bake for 20 to 25 minutes until the edges are bubbling and the topping is slightly golden and fragrant.
Remove from the oven and let it rest for 5 minutes before serving to allow the flavors to meld.