Drain the canned tuna thoroughly and place it in a medium mixing bowl, flaking it with a fork.
Rinse and drain the chickpeas, then add them to the bowl and mash them slightly with the back of a fork or a potato masher.
Add the egg, almond flour, chopped green onion, fresh parsley, sea salt, black pepper, and garlic powder to the tuna mixture.
Stir all ingredients until well combined and the mixture holds together when pressed.
Form the mixture into 3 or 4 even-sized patties, pressing firmly to ensure they stay intact.
Heat the extra virgin olive oil in a non-stick skillet over medium heat.
Place the patties in the hot skillet and cook for 4-5 minutes per side until they develop a deep golden-brown crust.
Remove from the pan and serve immediately, perhaps with a squeeze of fresh lemon or a dollop of Greek yogurt.