Toss the cauliflower and red pepper peppers with three teaspoons of the olive oil, 1/4 teaspoon salt and 1/4 teaspoon ground black pepper.
Place in the oven and cook until tender, turning halfway through, about 35 to 40 minutes.
Make the couscous
Bring 2 cups of water or broth to a boil in a medium saucepan, adding a pinch of salt and optionally a tablespoon for additional flavor, if desired. Stir in the couscous, then cover the pot and remove from heat. Let stand covered, 10 minutes, or until all the liquid is absorbed, then fluff it with a fork and set aside.
Make the chickpeas
Toss the chickpeas with the remaining olive oil, cumin, paprika and red pepper flakes.
Heat a small skillet over medium heat. Add the chickpeas and cook until crispy and toasted, about 5 minutes.
Assemble!
Divide the couscous, roasted vegetables, cucumbers and chickpeas among 4 bowls and top with the muhammara and parsley. I usually do a drizzle of olive oil and black pepper before serving.
Notes
If you use water instead of vegetable broth, then I recommend adding a little salt to the water for flavor. For richer flavor, I like to add in a tablespoon of olive oil to the couscous.