In a large saucepan, heat oil over medium high heat, add the couscous and lightly toast while stirring, 3 to 4 minutes.
Add the chicken broth, lemon zest and juice, salt and pepper, bring to a boil then reduce heat and simmer for 8 to 10 minutes until the couscous is tender.
Add the peas, scallions, and parmesan cheese, stir to melt the cheese and warm up the peas, 2 minutes.
Serve warm.
Notes
Adapted from Food Network, Giada at Home.
Leftovers can be stored refrigerated in an air-tight container for up to 3 days. Reheat in a microwave and add a bit more broth or water to loosen it up.