Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper for easy cleanup.
Cut the tempeh into 1-inch cubes and steam them in a steamer basket for 10 minutes to soften the texture and remove any natural bitterness.
In a small mixing bowl, whisk together the tamari, extra virgin olive oil, garlic powder, and ground ginger until well combined.
Place the steamed tempeh, broccoli florets, and sliced red bell pepper into a large bowl and pour the marinade over them, tossing gently to coat every piece.
Spread the marinated mixture in a single layer on the prepared baking sheet and sprinkle the nutritional yeast evenly over the top.
Bake for 22 minutes, flipping the ingredients halfway through the cooking time, until the tempeh is browned and the vegetables are tender.
Remove from the oven and garnish with the hemp seeds, sea salt, and black pepper before serving while hot.