Instructions Combine all quinoa tabouli ingredients in a bowl. Adjust salt and lemon to taste and store in fridge until you are ready to assemble.Add mayo, lemon juice, dijon, salt, pepper, tarragon, and garlic powder to a bowl. Whisk to combine.Add chicken and remaining chicken salad ingredients to a large mixing bowl followed by mayo mixture. Stir to combine. Adjust seasonings to taste.To assemble lunch boxes, add grapes to one compartment, quinoa tabouli to another, and chicken salad to the other. Serve with a lemon wedge, cucumber slices, and crackers.