Press the extra firm tofu for at least 15 minutes to remove excess moisture, then cut into 1-inch uniform cubes.
In a medium bowl, toss the tofu cubes with arrowroot powder, sea salt, and black pepper until each piece is evenly coated.
Heat the sesame oil in a large non-stick skillet over medium-high heat and add the tofu in a single layer.
Sear the tofu for 8-10 minutes, turning occasionally, until all sides are golden brown and noticeably crispy.
Add the broccoli florets, sliced red bell pepper, and edamame to the skillet, sautéing for 5 minutes until the vegetables are tender-crisp.
In a small jar or bowl, whisk together the tamari, chili garlic sauce, grated fresh ginger, and minced garlic.
Pour the sauce over the tofu and vegetables, tossing constantly for 1-2 minutes until the glaze thickens and coats every ingredient.
Serve immediately in a shallow bowl while the tofu is at its peak crunch.