4000 kilojoules Because a bag of potato chips consumes 2000 kilojoules, the total heat of two bags of potato chips is 4000 kilojoules. Therefore, eating potato chips can absorb more calories than ordinary food, and people who lose weight had better not eat or eat less. Eating snacks like potato chips occasionally won't make you fat. When losing weight, you can adjust your diet through exercise and long-term persistence, and lose excess fat healthily.