In a bowl, mix together 2 tablespoons of olive oil, minced garlic, lemon zest, lemon juice, oregano, thyme, cumin, salt, and pepper. Add the chicken breasts and ensure they are well-coated. Cover and let marinate for at least 30 minutes.
In a medium saucepan, bring the chicken broth to a boil. Once boiling, stir in the couscous, cover, and remove from heat. Let it sit for about 5 minutes until the liquid is absorbed. Fluff with a fork and set aside.
In a large skillet over medium heat, add the remaining tablespoon of olive oil. Once hot, add the marinated chicken breasts. Cook for about 5-7 minutes on each side or until the chicken is golden brown and cooked through. Remove from heat and let rest for a few minutes before slicing.
In a large bowl, combine the fluffed couscous and any remaining marinade drizzled off the chicken. Adjust seasoning if necessary. Toss in chopped parsley for an extra fresh flavor.
Slice the chicken and place it on a bed of the lemon herb couscous. Garnish with additional parsley and lemon wedges on the side.
Notes
For a vegetarian option, substitute chicken broth with vegetable broth.