I really don't understand why everyone thinks it's so hard to go paleo backpacking.
Make up a batch of guacamole and dehydrate it! I mashed up an avocado with some cherry tomatoes, salt, onion powder and lots of lemon juice. Dehydrate it and then pulverize it in a food processor. Home made, healthy guacamole powder. Sweet potato bark works great too. I boiled up two sweet potatoes, strained, mashed with salt and pepper and then laid it out in my food dehydrator. You can rehydrate it and add a packet of tuna or dried sausage and some dried veggie like onions or mushrooms.
Dehydrating stuff really reduces weight and it's really simple to rehydrate.
I even made a delicious chowder for dinner one night with sole and salmon and tons of dill, sweet potatoes with coconut milk and bacon. I tossed the left overs in my food processor until it was a thick mush then put it in the dehydrator. When it was done dehydrating I put it back in the food processor to make it into a powder. Now I have chowder powder that I can add some tuna and some veggies, coconut oil and maybe even some more sweet potatoes (dehydrated of course!) for a healthy filling paleo meal. You can make chili, sweet potato 'chips', pumpkin bark (I got the recipe from http://www.backpackingchef.com... 15 ounce can pumpkin¼ cup real maple syrup2 tsp pumpkin pie spice (cinnamon, nutmeg, ginger, allspice)
I added way more cinnamon and it turned out great.
You could make a beef or chicken broth and veggie soup. You could add squash (or sweet potatoes if you're not sick of them yet) for carbs and to make the soup thick. Blend it all with a hand blender or a food processor until it's gloopy. Toss it in the dehydrator and when it's time to rehydrate it, you can add tuna, chicken, or ham and a splash of oil. Bring sesame to put an asian twist on it. You could even add some other dehydrated veggies to it to make it more chunky. This stuff dehydrates to almost nothing and when it's rehydrated you have thick, delicious meals. You can also dehydrate any lean meat, like ham or lunch meats with little fat. It might not quite be paleo to use lunch meats, but it definitely beats resorting to grains!
Keep in mind, you'll want to double, maybe even triple the recipe to get enough to feed one person. Usually when I make guacamole, I use half an avocado for myself but when I dehydrate it, I use a full one.