A lot of top restaurants serve baked salmon with simple salt. Prep fresh or frozen with a little olive oil and a nice dusting of sea salt. Serve with a vegetbale, like seasoned baked brussel sprouts. You can cook the fish and most veggies together. Very easy and hands-off.
Another cue from popular restaurants: Quinoa instead of potatoes at breakfast. If you're not familiar it's a nutrient-packed grain with a slightly crunchy texture. You can mix in ingredients or it's good alone. One cup makes a lot, which you can then use with other dishes during the week.
The most basic food will come alive with good seasonings. Roast potatoes with chopped fresh garlic and fresh rosemary and serve with simple scrambled eggs. You can also microwave the potato, chop up and pan-fry in olive oil for a few minutes for a crunchy effect.
Nuts such as pine, almond, walnuts, etc. can transform meals and make them more of an experience. Roasting the nuts for a few minutes will bring out additional flavor. It's great with vegetables like steamed green beans and spinach but don't be afraid to try it with fish and other meats too.