My ideas so far are boiled eggs, greek yogurt, cheeses sticks, nuts, baked oatmeal made with proteins can be made in a big batch on Sunday and will still be safe to eat on Friday morning, ... these are all things that should stick with you so you are not so hungry later in the morning.
I make omlete bags and keep them in the freezer and take them out the night before. The bags have fried onions, peppers, mushrooms, bacon,... In the morning I toss it in the frypan and add eggs and we all have a healthy breakfast and are not hungry until lunch.
For lunch you can prepare salad toppings on Sunday that will last all week. Cut up meat, have eggs boiled, buy shredded cheese, keep nuts and seeds in the pantry. You can do this. You are worth taking the time to plan.
How about feeding your kids healthy foods too? Trust me if they are hungry they will eat it. They will learn to love it.