Press the firm tofu between paper towels for 15 minutes to remove excess moisture, then cut into 1-inch cubes.
Cook the soba noodles in boiling water according to package directions, then drain and rinse with cold water.
Use a spiralizer to turn the zucchini into thin noodles and thinly slice the red bell pepper.
Heat a non-stick skillet over medium-high heat and add the sesame oil.
Season the tofu cubes with sea salt and black pepper, then sear in the skillet until golden and crispy on all sides.
Add the minced garlic, grated ginger, bell peppers, and edamame to the skillet, sautéing for 3 minutes until the vegetables are tender-crisp.
In a small bowl, whisk together the tamari, lime juice, and red pepper flakes.
Add the cooked soba noodles and zucchini ribbons to the skillet, then pour the sauce over the mixture.
Toss everything together for 1-2 minutes until the zucchini is slightly softened and the dish is heated through.