In a medium bowl, use a fork or your hands to mash the drained tofu into crumbles resembling the texture of scrambled eggs.
Stir in the tahini, nutritional yeast, and onion powder until well combined.
Season with salt and pepper, if desired.
Heat the coconut oil in a large nonstick skillet over medium-high heat.
Add the tofu mixture and cook for 5 minutes, stirring occasionally, until heated through and slightly browned.
Remove the skillet from the heat.
Stir in the hemp seeds, mixing well to incorporate them into the warm tofu.
Transfer the finished filling to a serving bowl.
Assemble the tacos by generously filling each warmed corn tortilla with the tofu mixture.
Serve immediately with bowls of green onions, cilantro, lime wedges, and your favorite hot sauce for everyone to customize their own.
Add a pinch of smoked paprika or a ½ teaspoon of garlic powder to the tofu mixture for an extra layer of savory, smoky flavor.