Drain the seitan strips and toss them with the garlic, jalapenos, cumin, chili powder, and onions in a small bowl. Set aside.

Combine the orange juice, lime juice, olive oil, parsley, cilantro and honey in a blender and mix until combined. Whisk in the sour cream. Set aside.

In a medium skillet, heat the canola oil over medium heat. Add the seitan mixture and cook until the seitan has browned and the onions are soft.

Assemble the tacos with the seitan mixture, tomatoes, spinach and cheese.

Spoon the citrus dressing over the tacos. Alternatively, because it is very liquid, you can also coat the cooked seitan mixture with the desired amount of dressing before taco assembly.