Mcdonalds Nutrition Info: 20pc Chicken McNuggets McDonalds , Open Box. This is a box of 20 piece Chicken McNugget box I ordered from McDonald’s. These chicken nuggets are tempura battered and cooked to golden crisp. I liked the tangy barbecue sauce. Nutrition info: 940 Calories 44g Protein 59g Fat 59g Carbs 1800mg Sodium/.