ebrady:

It sounds like you're dealing with two problems:

1. Being unable to get the food you need because of your parents

2. Cravings, like those which caused you to fall off the wagon the first time

These problems may be related.  It's currently fashionable to blame weight accumulation on "addictive food", but this gets the causality wrong.  Food becomes addictive because you're hungry -- and you're hungry because your body either needs nutrients it isn't getting, or is metabolically dysfunctional in some way (it can't properly access stored nutrients).

First, it's best to point out that "three eggs plus two slices of bacon" isn't very much food.  Eggs only have 70-75 calories each, and two cooked slices of bacon have, at most, 70 calories.  (The package says 90, but much of the fat cooks out.) A tablespoon of butter has 100 calories, and you're probably using less, so...

Total breakfast calories: 350-400.  That is NOT "a big breakfast"!  Even your parents should be able to do that math, and understand that they can't starve you at lunch. 

Moving on to lunch: vegetable soup has basically zero calories, and a 3-4 oz. chicken breast will have 120-160 calories...so they're feeding you a 150-calorie lunch, you've only ingested 500-600 calories over two of your three daily meals, and you're working out 3-4x/week.  Of course you'll be hungry! 

Again, your parents should be able to do that math and understand that they are, quite literally, starving you during the school day...which is why you crave junk food at school.

Your next problem will be "How can I get animal fat and nutrients in my diet, since my parents refuse to let me eat them except at breakfast?"

First, everyone agrees that fish is healthy...so you can request fatty fish, like salmon.  I can't imagine they'll object, and you can easily get one or two dinners a week out of that.  You can even make gravlax using my delicious recipe, which you'll be able to take to school and eat for lunch!

Second, to get them to stop feeding you sandwiches, you need to provide some easy (for them) alternatives.  For instance, make a big pot of garlic mashed potatoes (sneak plenty of butter in there as you make them), and you'll have several days worth of stuff you can microwave, throw some leftover meat on top, and go.  Same with rice: leftover rice keeps for several days in the fridge, and you can throw some butter on it, fry it up, spice it with some salt or Creole seasoning, throw a bunch of leftover meat on top, and go.

Also, you may have to buy and keep some things on your own if they won't feed them to you.  Coconut oil keeps without refrigeration...and I don't know if kids are allowed to have lockers anymore, but you can certainly keep it in your room, or anywhere else, and add it to your lunch so you have some fat and calories.  (Refined coconut oil has no taste, virgin/unrefined oil tastes like coconuts.)  And most people go "Ew, yuck," but butter is fine at room temperature for several days unless you live in the tropics.  (Clarified butter will last much longer.) 

Finally, if you want to try and educate them, you can do far worse than a copy of the Jaminets' Perfect Health Diet, as it's heavy on science (and written by PhDs) while not being explicitly "paleo".  (Link to Amazon UK) 

(And here's a request for Paul Halliday...can you point out some of your recipes for her that look "mainstream healthy" (e.g. probably fish-based) but have plenty of delicious fat?)

I hope this helps...let us know how you get on, and I'll do my best to answer questions.

Live in freedom, live in beauty.

JS