My grocery store just had boneless skinless turkey breasts on sale! Half the cost of chicken. That's a nice change of pace. Try cooking the same old stuff you usually eat a different way. Grill your chicken, throw it in the slow cooker, season it with something new.
Get some stuff to make a salad-- get a good vinagrette or make one yourself. Cover it in meat. My favorite salad dressing in the world is salsa (compare brands for carbs-- a lot add sugar) and mix in a little ranch. Heaven. Throw in an avacado. There's a change of pace. Oven roast veggies...carrots, tomatoes, whatever you want.
Buy some sweet potatoes. Cut them like fries. Bake them brushed with a little olive oil. Season as you wish-- splenda and cinnamon or garlic. Just try new spins on the same old stuff. Eating clean doesn't have to be dull.
Get some fresh fish. It's not always as expensive as you might think it is. You have lots of options!