Wash and drain the garbanzo beans.
Drain the tuna and place in a salad bowl. Break the tuna with a fork or masher into small pieces.
Add the drained garbanzo beans and the rest of the veggies. Sprinkle the lemon juice all over and toss lightly being careful not to crush the beans.
Mix the dressing well in a jar; it will be thick. If it’s too thick, add 1 tablespoon of water and mix well again.
Drizzle the dressing all over the salad and toss a few more times until distributed evenly.