Crumble your tempeh into a large mixing bowl. Then, using a large spoon, mix in the garlic, tomatoes, jalapeño, chili powder, cumin, lime juice, garlic powder, onion powder, oregano, chipotle pepper, and Bragg's. Once your tempeh is completely mixed into the spices, mix in the onion and pepper. Then drizzle the water 1 tablespoon at a time into your mix while stirring your ingredients continuously. Taste a little bit of your tempeh and add salt and pepper to taste.
Spray your favorite cast-iron skillet or frying pan with a heavy coating of olive oil cooking spray, and then heat over medium heat. Once the oil is hot, toss in the tempeh mixture and liquid smoke. Flip your tempeh-vegetable mixture a few times so that it browns evenly. You'll know it's ready when your vegetables are tender and your tempeh has crispy edges. It should take about 10 minutes.
While your tempeh is cooking, heat your taco shells slightly in the oven following the directions on the package.
Once your taco shells are warm, fill them with the tempeh and vegetable mixture. Top with vegan cheese and set aside so it can melt slightly.
Serve with guacamole, salsa, hot sauce, cilantro, black olives, lime wedges, and anything else you like on your tacos!