I think I'm a decent cook, but rarely do it because I feel like I never have the time (and am terrible at meal planning), but if I do, one of my favorite things to make during the week is salmon in parchment paper. It's so fast and easy, and clean up is also very easy.
I tend to do some variation on this recipe:
Parchment Baked Salmon Recipe
Basically: slice notches into salmon fillet, stuff the notches with herbs (I also put pats of butter in alongside), and then put a couple lemon slices on top. Wrap in parchment paper, stick in the oven for like 15-20 min, and it's done. Works really well with fresh basil or dill, but other herbs are also good.
I will sometimes make a spinach rice to go with it, or I will make a lemon/onion/caper/cream sauce thing to put on top of some rice & frozen vegetables.
Spinach rice recipe here (actually, this whole recipe is AWESOME and now I'm remembering I haven't had it in a while).
For people who aren't afraid of box mac & cheese...the Annie's shells & white cheddar is really good if you toss in some steamed broccoli & kale, plus a little extra milk/cream & cheese to make more sauce. Nom nom.
Always looking for ideas for stuff that is super fast & easy to make in
single servings for one person -- I'm alone most of the week, and don't love leftovers unless it's a specific dish (chicken marsala being one that gets better in the fridge

). So, any ideas for that would be awesoooome