Well you kind of ruled out all the meat groups. However there is a thousand ways to cook Chicken, from Woking to baking. Or just stir frying in a skillet.
And you can Wok beef, broil, skewer. Nothing better than stir frying beef, or Chicken with peppers, and onions, one a bed of rice, or potatoes, or the rice cooked, and stirred into the mix in a Wok.
Fact is. You can cook everything camping that you can at home. and we NEVER cook inside while camping.
BTW. Frozen vegies are very fresh when cooked. Just like fresh picked. Try it.