Oooh, a challenge…
I know you can’t do rice, but can you have wraps, like those made with a whole wheat tortilla? You could do a nice stirfry wrap with chicken and fresh veggies. You can put most anything else in a wrap, too - we often have roasted veggies with pesto. Speaking of wraps, what about lettuce wraps? If you can’t have tortillas, you can put stir fry in lettuce and roll it up that way. You can also roll up ham and cheese, any brunchy-type salad (chicken salad, tuna, etc.).
You can also make a nice fish or chicken curry using onions, garlic, ginger, cinnamon, a teeny bit of clove, lots of coriander powder, some cumin and a bit of cayenne. You can do the same with virtually any lentil, too.
Grilled, glazed salmon is also wonderful. That would be a good foil for your green beans. Marinate some salmon overnight or just during the day (maybe while you’re at work) in a mixture of soy sauce, sesame seed oil (optional - can use canola, too), ginger, garlic and brown sugar (just 1 tbsp; you can omit or use honey instead). When you’re ready for dinner, fire up the grill to medium or turn the oven on to 350 and grill it for a few minutes or bake for 20.
My favorite way to prepare green beans is to wash them, melt a tablespoon of butter in a large, flat pan on medium-high, toss in 2-3 cloves of chopped garlic, throw in the beans and cook 'til bright green and still crunchy, add a little salt & pepper to taste.
You can also pair the salmon (or most other proteins) with sauteed garlic spinach. If you use fresh spinach, you’ll need about 1/2 pound for two. Put it in a large pot and steam 'til wilted. Heat some olive oil in a skillet, toss in some garlic, then mix the spinach in until it’s well combined. Salt or pepper as desired. Good also with some sesame seeds.
If you need something “carby,” you can puree some cauliflower instead of potatoes or bake a spaghetti squash, seeds removed and squash halved, until tender (350 for probably an hour), then rake out the insides with a fork. It’ll look like spaghetti and is really, really good with basil or cilantro pesto or even spaghetti sauce.