I would suggest you add some green leaves: spinach, broccoli, some lettuce, maybe kale, fresh herbs like parsley, koriander, basil, etc. these are heavy on vitamins+minerals.

If you don't love fresh kale (can be bitter) gently frying it makes it less bitter.

You can add chopped kale or spinach to your eggs - about a tablespoon per egg and whip it (whip it good), fry it like a green pancake and use it like a wrap with fresh leaves, some meat, good olive oil.

Oily fish like mackerel, sardines, herring, vild salmon are also nutrient dense foods. Even canned these are a good (an easy) way to get nutrients.