Heat oil in a medium saucepan over medium-low heat. Saute garlic with red pepper flakes for 2 minutes being careful not to burn garlic. Add the chicken broth, turn up heat to medium-high and bring to a boil. Stir in couscous, cover and remove from the heat. Let stand 5 minutes. Season with salt and pepper and fluff with fork. Transfer to a serving bowl and serve.