I recommend the Protein Power
approach - figure out how many grams of protein your body needs for growth and to sustain your lean body mass, and make sure to get that spread out over three meals a day. You can get it from any source - eggs, cheese, lunchmeats, etc. Add unlimited low-carb vegetables, lots of water, and limited carbohydrates.
This should work well for breakfast and lunch, which I assume you have control over. Dinner might be a problem, if the cook of your household uses a lot of casseroles to stretch the expensive protein. Do your parents generally cook separate dishes (meat, potatoes, veg) at dinner, or mixed dishes? How much control do you have over what you eat?
There is a variation on this in The Carbohydrate Addict's Lifespan Program
that basically does no carbs for two meals a day, and all your carbs at a "Reward Meal." So your breakfast would be something like scrambled eggs and mushrooms; lunch a salad with lots of greens and enough protein (from tuna fish, or sliced meats and cheeses); dinner a protein, variety of vegetables, and a small serving of starch.
Both these books are likely at your local public library, so you could calculate your individual needs and limits. It is important to feed your growing body adequate protein, calcium and a variety of nutrients, so be sure to calculate what you actually need rather than going by what someone else eats - my 56-year-old body has different needs than your 14-year-old body
Does this sound like it might work with your family's food and cooking choices?