Well I'll share what I eat with you, so you can compare. I have not moved out yet, as I am still 16.
Breakfast is usually 4 slices of wholemeal bread with half a can of baked beans(salt reduced), and often a piece of fruit. This is usually at about 7:30am, though a bit later usually if I don't have school(school is 4 days a week).
I do not take any food to school, so if I have school, I won't eat anything until about 4pm. But the 3 days a week I am at home, I'll eat twice before then, and again in the afternoon. Oranges, mandarins, apples, melons, pineapple, walnuts, almonds, sunflower seeds, pumpkin seeds, and some others depending on what I have chosen shopping previously.
At dinner, I do not just eat what my family eats. Though I do share in some of it, like vegetables, I'm usually eating legumes while they are usually eating meat. Just today, I ate wholemeal pasta with soybeans and some vegetables. I'll often eat potatoes, cauliflower, carrot, green beans, and quite a range of things.
My diet is certainly not perfect, but is somewhat healthy compared to most people my age
and I hope you can do similiar even though you live with your parents. Just make it so it is not a big issue for them, take care of most of your diet yourself.
A few months ago I thought I wouldn't be a vegetarian until I move out. One day I said(after having leaned towards vegetarianism for months) "I don't like chicken" and ever since then I have not ate meat.
Goodluck.
