Slice the zucchini and peppers using a food processor with the slicing blade. (You can also slice by hand, but I find this process much quicker).
Heat the oil over medium in a large pan. Add the onion with a pinch of salt and sauté until soft and translucent (around 5-6 minutes). Add the garlic and cook for another 1-2 minutes, taking care not to let it burn.
Add the peppers, zucchini, and spices, stirring well to ensure everything is coated, around 2-3 minutes. Reduce the heat slightly and cover, cooking until the veggies have softened and cooked through, around 6 minutes.
Remove from the heat and adjust for flavor. Serve with warm tortillas, Mexican Rice, and black beans and top with avocado, tomatoes, hot sauce, and lime.
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