Stay Away From These, Unhealthy Kids Foods. As many parents know, kids can be some of the world's pickiest eaters. One day, a certain food is the best thing they’ve ever had. The next day, it’s the most disgusting thing in the world. . Unfortunately, this can cause many defeated parents to turn to kids foods that aren’t the healthiest options. . Most of the classic kids foods, especially prepackaged or frozen ones, contain too much sugar and fat and not enough nutritional quality. . Here are 13 of the unhealthiest kids foods that you should try to stay away from. 1. Fruit Gummy Snacks. 2. Fruit Juice. 3. High-Sugar Cereals. 4. Applesauce. 5. Boxed Macaroni and Cheese. 6. Hot Dogs. 7. Flavored Yogurt. 8. Popcorn . 9. French Fries. 10. Pizza. 11. Hard Candies (Lollipops). 12. Granola Bars. 13. Fast Food