1. Place couscous, 1/4 teaspoon salt, 1/4 teaspoon pepper, and cinnamon in a bowl. Stir in boiling water; cover and let stand 10 minutes. Fluff with a fork.
2. Combine oil, juice, garlic, and sugar.
3. Add oil mixture, remaining 1/4 teaspoon salt, 1/4 teaspoon pepper, mint, and next 4 ingredients (through tomato). Sprinkle with cheese.