Slice the tempeh into strips. Add to a dry skillet over medium heat and sear for 2 - 3 minutes per side.
While the tempeh is cooking, thinly slice the red onion and peppers, and mince the garlic.
Transfer the tempeh to a plate and return the pan to the stove. Add the oil and once hot add the onions, peppers and garlic. Saute for 2 - 3 minutes until the veggies begin to soften. Add a splash of water if needed.
Add the spices, along with salt, pepper and the tempeh strips and continue to cook until the veggies have completely softened. Add a splash or two of water to make it more “saucy”!
To serve, gently warm the tortillas and fill with the fajita filling. Top with sliced jalapeno, fresh cilantro and a spritz of lime if desired. Dig in and enjoy!