There are easy ways to eat healthier choices that don't requrie cooking or anything.

First off low-fat string cheese and whole grain crackers (like triscuits) is a really good snack. Low-fat cheese is one of the primary low-fat/low-carb snacks that we have people with diabetes eat. Low-fat cheese of all types can be quick food for a lot of things, even when you can cook. Add it to a whole grain bread (check your label, you want 3+ grams of fiber per slice,) and melt it for grilled cheese.

Another good option is low-fat yogurt. You can sprinkle in some Fiber One cereal. (the ones that looks like sticks, not the flakes.) About a 1/8 of a cup of fiber one in yogurt is really good. It's like having a pie, but way better for you. I have this for breakfast a lot. And it takes like 2 seconds to make. You can also sprinkle in some almonds.

Peanut butter is a really good thing. Depending on how old your son is it's also cook-free, and kid safe. (Unless he's allergic to peanuts obviously.) You can either get whole grain bread or you can put it on celery sticks (my favorite) or you can put it on apple slices or even bananas. These are all really healthy. Or you can put it on whole grain crackers, too. Peanut butter is very versitile and it's a healthy fat. You can look for lower sugar options if you like.

All types of nuts are healthy, especially almonds. You can have a handful of almonds and some fruit or veggies.

Buying lots of easy to eat veggies like baby carrots, celery, and even thinks like broccoli and cauliflour or whole sugar/snow peas are good to eat raw. Also have a lot of fruit choices hanging around like apples, bananas, or cuties. My 6 year old loves cuties. They are just his size and they are extremely easy to peel so he can open them himself.

I know it's terrible to cook. I hate cooking! And I especially hate it when I'm depressed and mentally/physically exhausted from work all day. But, you have to feed those kids no matter how bad you feel, so I know right where you're coming from.