Maybe try some puree soups where you simmer a bunch of veggies and then puree them in a blender? My mom has two recipes of this type (an orange one and a green one) and we have a don't ask-don't tell policy about the ingredients. We know each of us has a food in there we would not eat under other circumstances
Here are some ideas I have as someone who has allergies myself
Breakfast: How do you feel about things like applesauce or pudding? Maybe you could have a smoothie (soy yogurt, soy milk, juice, fruit etc. blended up) or a pudding (chocolate pudding layered with banana). Use soy yogurt to make your smoothie or pudding and you'll get some protein. Both of these ideas will also help you get in some fruits. You didn't mention oats---how do you feel about oatmeal? My standard breakfast is oatmeal with applesauce mixed in. I can't have raw apples (cross-reaction from my tree nut allergy) but I can have apples in cooked or processed form. Add a touch of cinnamon, it is supposed to be good for regulating blood sugar.
Snack: I usually have a lighter snack in the morning, if I snack at all. My breakfast usually keeps me until lunchtime. I often have fruit. If you don't like bread, how about crepes or pancakes? Top them with soy butter and jam, tofu cream cheese and jam, warm fruit (maybe apple pie filling from a can?) or something like that? I have also heard that canned pumpkin warmed up and diluted with soy milk is good.
Lunch: I always make two-serving dinners and save half for lunch. See my dinner comments
Afternoon Snack: I like to have a good afternoon snack because I work out when I get home. Often, I will make a trail mix composed of the dry cereal of my choosing mixed with a teaspoon of raisins and a teaspoon of soy nuts. I am limited in dry cereal choices due to my corn allergy, but there are so many flavours, you may be able to experiment and find one that you like, to get in some grains.
Dinner: How about borrowing 'The Sneaky Chef' from the library, or googling some of the recipes? You can puree some cooked vegetables (or buy baby food vegetables as a shortcut) and blend them into soups, sauces etc. How about some tofu baked with a rich tomato sauce with veggies blended in? Or a hearty soup? Perhaps a casserole of some kind? You did not mention potato, how do you feel about those?