Calories In Holli's Healthier Taco Bell Quesadilla Chicken Calories: 953, Fat: 42g, Carbs: 25g, Protein: 105g, Fiber: 3g. Calories In Taco Bell Chicken Quesadilla Calories: 623, Fat: 33g, Carbs: 30g, Protein: 50g, Fiber: 0g.