Heat the oil in a large skillet over medium-high heat. Add the onion, and sauté until it just begins to brown, stirring frequently.
Add the garlic, and cook for 2-3 minutes, more, until it has just softened.
Now add the tempeh crumbles, and sauté with the onions and garlic until the tempeh begins to brown - about five minutes. Then add the spices.
Add the diced tomatoes, water, and nutritional yeast and stir well to combine. Reduce the heat to medium-low, and let the bolognese simmer for about 20 minutes, stirring occasionally.
Serve over chickpea pasta, with extra nutritional yeast sprinkled over the top.