Press the extra firm tofu for 15 minutes to remove excess moisture, then cut into 1-inch cubes.
In a small bowl, whisk together the lemon juice, lemon zest, minced garlic, dried oregano, sea salt, and black pepper to create the dressing.
Heat the olive oil in a non-stick skillet over medium-high heat.
Add the tofu cubes to the skillet and sear until golden brown on all sides, approximately 8-10 minutes.
Stir in the chickpeas and nutritional yeast, tossing the mixture to coat the tofu and beans evenly.
Add the baby spinach to the pan and sauté just until wilted, then stir in the cooked quinoa to warm through.
Pour the lemon-herb dressing over the tofu mixture and toss well to combine all flavors.
Garnish the bowl with fresh chopped parsley and serve immediately while warm.