You can't see it, but the pita is stuffed with shredded romaine lettuce. There's also a small cup of olive/pepper/pesto salad, grapes, and tuna salad topped with pickles.
Tuna salad is a very individual thing in my house. I like it with lots of mustard and onions, and my mom likes it with pickles. I usually don't like pickles with tuna salad but added them to make it look prettier.
The olive salad is very easy to make. Just slice olives and bell peppers, add a can of drained cannelini beans and a smidge of tomato or pesto sauce. Sometimes I add boiled new potatoes to make it a little more hardy.