The easiest way to eat healthy and save money on food is to spend a couple of hours each Sunday afternoon planning and preparing meals for the next week. Cooking is simple if you start with the basics. Just find some recipes you like the look of and go ingredient shopping.

Soup, pasta, anything you can make in a big batch and eat throughout the week. Rice is great for this because you can cook it, split it into portions and freeze it, then you just microwave each one straight from the freezer as and when you need it. Saves a lot of time and you don't have to worry about it going bad. Chicken lasts for a few days in the fridge once it's cooked too.
You'll stick to a meal plan easily if you're making food you like.