Heat the olive oil in a saucepan over medium heat. After 90 seconds when the oil is hot, add the pearl couscous and stir constantly for 3 minutes until lightly toasted.
Add the garlic, turmeric, coriander, and cinnamon. Stir for 60 seconds to bloom the spices.
Pour in the water and add the salt. Increase to high heat and bring to a boil.
Reduce to low heat, cover, and simmer for 10 minutes until the liquid is absorbed and the couscous is tender. Remove from heat, uncover, and let stand for 10 minutes to cool.
While the couscous cools, cut and combine the cucumber, cherry tomatoes, red onion, parsley, dill, and chickpeas in a large mixing bowl.
In a separate bowl, whisk the lemon juice, Dijon mustard, sumac, thyme,extra-virgin olive oil, and salt.
Mix together the cooled couscous, prepped vegetables, herbs, and dressing in one bowl.
Transfer to an attractive serving dish and garnish with additional herbs if desired.