Plan ahead meal planning helps out alot. If you know you'll have a busy week ahead, try grilling your proteins on the weekend prior (which takes up most cooking time), then containerize your portions as a grab-n-go meal which you can heat up quickly during the week or easily add some veggies on the side - the cleaning is easy as well. Easy peasy meal for 1.

https://www.allrecipes.com/recipes/15050/everyday-cooking/cooking-for-one/ Best wishes!