I buy a tub of pulled white meat rotisserie chicken at walmart almost every week, it lasts quite a while when it's being portioned out two ounces at a time, and you can do so much with it.
I eat a lot of spinach salads, with 2 oz of chicken, 1/4 of an ounce of walnuts or pumpkin seeds, and a handful of blueberries or other low glycemic fruit. Toss it in half a serving of salad dressing (I am hooked on poppyseed which is kind of sugary but I don't use that much and it's encouraging me to eat all those veggies, so I just factor it in). I literally ate one of these salads for all 3 meals the other day, which I know isn't great but it's healthy, tasty, and the numbers work out right.
I also make "pizza melts" which are a low carb tortilla with mozzarella, turkey pepperoni, and whatever "pizza topping" veggies I have on hand (olives, onions, peppers, tomatoes, etc). I heat it on my george forman grill and then dip the pieces into pizza sauce. If you use the La Banderita street tacos the whole thing ends up being about 200 calories (with 1/2 serving of mozzarella and 1/2 serving of turkey pepperoni). They're very filling.
One of my favorite dinners recently is cubed boneless/skinless chicken thighs cooked in the air fryer, which gives them a nice crust on the outside and makes it taste like takeout Chinese without the breading, and then add some sauteed broccoli and some green onion, with just enough teriyaki sauce to cover it (usually about half the amount the bottle says is a serving.). No rice, just broccoli and chicken. I usually sprinkle sesame seeds on top.