Press the extra-firm tofu for 15 minutes to remove excess moisture, then cut into bite-sized cubes.
In a small bowl, whisk together the turmeric, garlic powder, onion powder, sea salt, and black pepper.
Toss the tofu cubes in the spice mixture until every piece is evenly coated in a bright golden color.
Heat the avocado oil in a large non-stick skillet over medium-high heat.
Add the seasoned tofu to the skillet and cook for 8-10 minutes, turning occasionally until the edges are crispy and browned.
Remove the crispy tofu from the skillet and set aside on a plate.
In the same skillet, lower the heat to medium and add the cooked brown rice and fresh spinach, stirring until the spinach is fully wilted.
Stir in the Greek yogurt, shredded cheddar cheese, and nutritional yeast, mixing constantly until the sauce is creamy and the cheese has melted.
Return the crispy tofu to the skillet, toss gently to combine with the cheesy rice, and serve immediately.