Start by combining the mayonnaise (or Greek yogurt), extra-virgin olive oil, fresh lemon juice, Dijon mustard, kosher salt, black pepper, and optional hot sauce in a medium mixing bowl. Whisk everything together until smooth and creamy.
Open the can of chickpeas and drain any excess liquid. Rinse them under cold water in a colander to remove any added sodium or preservatives.
In the same bowl as your dressing, add the drained chickpeas along with the drained tuna. Use a fork to break apart the tuna into bite-sized pieces and gently fold everything together without mashing the chickpeas.
Mix in the finely chopped celery, minced red onion, and fresh dill into your tuna-chickpea mixture.
Toss in your choice of roughly chopped capers, green olives, or relish.
Serve on a bed of arugula drizzled with olive oil, or spread on whole-grain bread.
Take a moment to admire your creation before digging in.