Banana chips have a moderate calorie content. If you eat a 2,000-calorie diet, a 2.3-ounce portion has 519 calories or about 10% of your daily calorie intake. Carbohydrates and fat account for the majority of the calories (25 and 14 grams, respectively). Both of these nutrients are concentrated energy sources. That means banana chips can keep your body nourished between meals, but they can also cause weight gain if consumed in high quantities. You’ll gain some nutritional benefit for your calorie investment if you snack on banana chips.