Heat your grill on high for at least 10 minutes.
Cook the couscous according to the package instructions. Transfer to a large plate or bowl and spread it out to cool off.
Drizzle the veggies in a bit of oil and sprinkle with some salt and toss to lightly coat. Place the veggies on the grill and cook for about 4-6 minutes per side, or until you have nice grill marks and the veggies are softened. If using corn kernels, just add them to a skillet on the grill or stove over high heat and cook for 1-2 minutes or until charred.
Transfer veggies to a cutting board and cut into bite-sized pieces.
In a large bowl, whisk together the dressing ingredients until combined.
To that same bowl, add the couscous, veggies, and herbs. Toss to coat in the dressing.
Serve topped with cheese and pepper.