Preheat your oven to 400°F (200°C).
Press the extra firm tofu for 15 minutes to remove excess moisture, then cut it into 1-inch cubes.
Spread the broccoli florets and sliced red bell peppers onto a parchment-lined baking sheet and roast for 15-20 minutes until tender and slightly charred.
While vegetables roast, heat the sesame oil in a large non-stick skillet over medium-high heat.
Add the tofu cubes to the skillet and sear for 3-4 minutes per side until they develop a golden brown, crispy exterior.
Add the shelled edamame to the skillet during the final 2 minutes of searing to heat through.
In a small bowl, whisk together the tamari, garlic powder, onion powder, sea salt, and black pepper.
Pour the tamari mixture over the tofu and edamame, tossing constantly for 1 minute until the sauce thickens and coats everything evenly.
Remove the roasted vegetables from the oven and gently fold them into the skillet with the tofu before serving.