What Is The Cause And Treatment For Appetite Loss In A Child?

i have 2 year old daughter. her weight is 10.5 Kg. she is not eating her food properly. we found that she is hungry but still she is not eating properly. Whenever we try to feed her she cries a lot while having her food (a Healthy food) but She like Soppy Noodles, Chocolates, oily Chips, etc.... which is not healthy food.. She don t like to eat Fruits, Vegetables, Pulses...... where other childrens i found that they are eating everything Pls help me and tell me how we can increase her food intake / a healthy food intake???? Rahul