Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper.
Press the extra firm tofu between paper towels to remove excess moisture and cut into half-inch cubes.
In a large mixing bowl, toss the tofu cubes, chickpeas, and broccoli florets with the olive oil, sea salt, black pepper, and garlic powder until evenly coated.
Spread the vegetable and tofu mixture in a single layer on the prepared baking sheet and roast for 25 minutes, flipping halfway through, until the tofu is golden and the broccoli is charred.
While the vegetables roast, whisk together the nutritional yeast, lemon juice, and Dijon mustard in a small bowl, adding a tablespoon of water if needed to reach a pourable consistency.
Arrange the fresh baby spinach in a serving bowl and top with the warm roasted tofu, chickpeas, and broccoli.
Garnish the bowl with hemp seeds and drizzle the savory nutritional yeast dressing over the top before serving.