Ditch the Swansons beef pies, bacon, and soda. Those things are mostly fat, too much processing and salt, and empty calories. These items are low on nutrition.
Add: a loaf of whole grain bread (keep that in your freezer, and pull out a couple of slices the night before to thaw), a jar of peanut butter, a block of jack or cheddar cheese, a head of any kind of lettuce except iceberg (which has the lowest nutrient content), some canned soups (tomato, minestrone, vegetable beef, split pea, navy bean, do not buy cream soups which are full of fat), some canned beans (pinto, white, kidney), a fresh head of garlic, some tomatoes (fresh and canned), fruit (a bag of frozen berries, an orange, a couple of apples, a couple of bananas), a bag of dried pasta, a jar of tomato based pasta sauce, a bag or can of unsalted, or lightly salted almonds or walnuts, a head of cauliflower (or a bag of fresh mixed veggies), a box of regular black tea bags, and a box of regular oatmeal.
The point of all of my picks is to give you the most nutritious bang for your buck, and to give you options to mix and match.
You can make different kinds of pasta dishes, with your chicken, and tomatoes, and red pasta sauce, and veggies, and cheese. You can even make Asian-style noodles with the peanut butter and garlic.
Here is an Asian peanut noodle recipe (you can make the sauce with just peanut butter, a little bit of vinegar, and some chopped garlic) :https://showmetheyummy.com/thai-peanut-noodles-recipe/
You can add chicken, or broccoli, or cauliflower to the Asian noodles, or even a fried egg.
You can add chicken and veggies to your canned soup.
You can make soup, burritos, and dip with the canned beans. Or add some beans to your salad.
You can eat fresh fruit by itself, mix it with the yogurt into smoothies, or eat it with pancakes or waffles, or oatmeal.
You can make cheese, lettuce, and tomato sandwiches. You can make peanut butter sandwiches with jelly, or bananas. You can have toast with peanut butter. You can make a fried egg sandwich with cheese.
You can also make baked eggs with tomato sauce :https://www.realsimple.com/food-recipes/browse-all-recipes/italian-baked-eggs
(You can use your whole wheat toast instead of a baguette, and use your chicken instead of sausage).
The key to good nutrition, and delicious food, is to buy foods that are nutrient dense, and versatile, so that you don’t end up eating the exact same dish every single day.
Everything that I have mentioned is economical, and easy. You don’t have to be a chef, but you do have to do a little planning ahead.