Place half of the cauliflower in a food processor and pulse until it has the texture of rice. Don't over-process or it will get mushy. Set aside and repeat with the remaining cauliflower (you should get 4 cups out of it).
Place the riced cauliflower in a large bowl and add thee cucumber, onion, parsley, mint, tomato, olive oil, lemon juice, vinegar and salt. Toss well and refrigerate until chilled.
Divide the cauliflower tabblouleh, chickpeas and hummus among 4 bowls or airtight containers. You can assemble them separately and combine on the fly or use meal prep containers with 3 compartments.
Use fresh cauliflower and process it. Packaged cauliflower rice won't be nearly as fresh and crisp.
If you are preparing this recipe as GLUTEN-FREE, just be sure to use brands of chickpeas and hummus that are known to be GF.