Add in diced chicken and cook for 3-4 minutes until beginning to brown on the outside. Add in honey, mustard, 1 teaspoon of the apple cider vinegar, and salt and pepper, and cook for another 6-7 minutes until chicken is cooked through.
In a separate bowl, combine ¾ cup of dry couscous with 1 cup of boiling water and set aside for 5 minutes, covered with a plate.
Dice tomatoes and cucumber. Add them to the couscous along with ½ tablespoon olive oil and the remaining 1 teaspoon apple cider vinegar, and give it all a good toss.
Serve the chicken over the couscous.
Recipe by Uproot Kitchen at https://uprootkitchen.com/2016/01/20/honey-mustard-chicken/