but rarely has the time to make truly complicated or time consuming dishes
And just where is it written that you have to?
It's a common idea among less experienced cooks that complex, fancy dishes are necessary. More experienced cooks know that just the opposite is the case: simple dishes, made with the best ingredients available, really go over best.
Simplicity is even more important for someone like you, who has limited equipment available.
What, for instance, is wrong with a pan-fried fish filet, served with a simple green salad? If you want to fancy it up, make a pan sauce for the fish.
How long do you think it would take to run through all the possible changes on pasta; exploring the numerous shapes and sauces.
There are probably as many cookbooks devoted to chicken as there are chickens at a factory farm at any one time. No reason you have to struggle with ideas for chicken and other fowl.
Similar to chicken, in that regard, are eggs. What's wrong with a frittata or tortilla? And you can ring the changes on those, as well.
Is there anything more simple than a lamb chop?
I do take issue with you on one comment: There is nothing boring about soup. Or, rather, there doesn't have to be. There are at least as many ways of making soup as there are for making chicken. How could something that diverse ever become boring.
As we discussed on one of your other threads, soups, stews, and braises do require time. But most of that is cooking time, not time you have to invest. You could, for instance, put up a stew the night before, then reheat it for dinner the next day.
Keep in mind, too, that "fancy" is often more in the plating than in the preparation. F'rinstance, take a couple of chicken breasts. Pound them slightly, so they're evenly thick. Season with salt & pepper, dust with flour, and pan fry until cooked through. Serve the chicken topped with black olive tapenade, leaning against a mound of mashed rutabaga. That's three incredibly simple recipes, combined to make an elegant meal---and all it takes is your two burners.