Preheat the oven to 400F (200C) and spray a baking sheet with cooking spray.
In a medium bowl, add the salt and 1 cup of warm water and gently swish together with your hands to dissolve the salt.
Add the sliced potatoes and more water until the potatoes are completely covered and let soak for at least 15 minutes. After they soak, drain the potatoes and pat them completely dry with a clean kitchen towel.
In the same bowl, add all of the spices and mix with a spoon. Add the dry potatoes on top, then top with the olive oil. Combine everything with your hands until the fries are well coated in spices and oil.
Spread the fries in an even layer on the baking sheet (or two) making sure they do not touch. Bake for 25-30 minutes, flipping the fries with a fork after 15 minutes. Once they are crisp and lightly browned, remove them from the oven.
While the fries are baking, prepare the burgers: In a large bowl, combine the ground turkey, green onion, salt, pepper, onion powder, cumin and cayenne (add any other spices you like here to mix it up!). Mix until combined, then form patties with your hands. I made 3 large patties.
Heat a skillet over a medium flame for 2-3 minutes, then add the oil and let it heat up for 1-2 mins. Add the patties and let them cook about 7-9 minutes on each side. I had to flip mine a few times and it took a bit longer than I thought it would.
Assemble: Place the patties on the lettuce, stack the red onion and tomato next to them, then add the potato wedges. Let cool for 30 mins before placing in the fridge. Eat within 4 days and top with your garnishes and sauce before eating!