Heat your oven to 425°F (220°C).
Place sliced carrots on a baking tray. Add olive oil, salt, pepper, cumin, and smoked paprika. Toss well.
Spread carrots out in one layer. Roast for 25–30 minutes. Flip once halfway. Carrots should be soft with golden edges.
While carrots roast, bring broth or water to a boil. Add pearl couscous and salt if using water.
Lower heat and simmer for about 10 minutes until couscous is tender. Drain if needed.
Transfer couscous to a large bowl and let it cool slightly.
Add roasted carrots to the bowl.
Add lemon zest, lemon juice, and chopped parsley. Gently mix.
Taste and add more salt or lemon if needed.
Top with feta and nuts before serving.