For dinner i have: chick-fil-a grilled nuggets, small fry, & yogurt. for lunch i have an ensure. & breakfast i usually have nuggets. is this healthy?

No...: You need a more balanced diet in which you introduce a variety of fruits and vegetables along with white meat and fish if you like it. Nuts are good source of protein and also recommended as part of a balanced diet. Remember your breakfast is the most important meal so should be your richest meal of the day. If you have any further doubts a visit to a Nutritionist is advisable.