In a plate or shallow bowl, add soy sauce, hot sauce, maple syrup, oil, liquid smoke, onion powder, garlic powder, cumin, and pepper; mix well. Add sliced tempeh in the marinade. Let it sit for 5-10 minutes, while you cook the oat bran and greens.
In a small saucepan, add water and oat bran; bring to a boil. Reduce heat to simmer; cook for 1-2 minutes, stirring often. Add nutritional yeast, hummus, turmeric, salt, and pepper. Divide into four bowls.
Heat a greased skillet over medium heat. Add greens; cook until slightly wilted, about 2-3 minutes. Season with salt and pepper.
In the same skillet over medium heat, add tempeh (cook in two batches if necessary). Cook tempeh until slightly charred, about 3 minutes; flip and cook for another 2-3 minutes.
Top oat bran with greens, tempeh bacon, 1/4 avocado each, and additional hummus if desired.