Examle 1 and easy to make is egg salad. We all know there are many ways to boil eggs, or you can buy them boiled and peeled in the grocery store but I personally don't like the way they taste much.
I boil mine by cooking them on high pressure for 2 minutes in the Instant Pot, then 2 minutes Natural Pressure Release and then 2 minutes in cold water. The peel comes right off!
Chop the eggs, however many you want, I usually boil 8 and have salad for a few days, add olive mayo, a little bit of diced red onion and Mrs Dash garlic and herb seasoning. But that's my recipe. Easy and done in under 15 minutes. If you want to low carb it just substitute the saltine crackers for e.g. Lettuce wraps or slices of cucumber to put the salad on.

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Example 2: Another quick salad is mix romaine lettuce with spinach. Add a boiled egg (quartered in the picture), canned smoked salmon, avocado, red onion and avocado roasted garlic vinaigrette. Takes 5 minutes, fills you up and is healthy.
On the picture below is a similar salad except this one has no avocado and egg in it.

There are so many ways to eat quick and healthy on the truck. People say it's impossible to eat healthy on the truck because they don't have time for it. I just proved it doesn't take much time at all! Enjoy and safe travels!

To make chicken salad for on cucumber slices or saltine crackers. Just have to add some olive mayonnaise to this (canned chicken breast meat, quartered red grapes and celery).
A friend of mine mentioned she adds slivered almonds to hers which sounds great too!
If you want the low carb version, put the salad on lettuce leaves and make wraps with it or cucumber slices or fill half an avocado with it and omit the saltine crackers.