Trim the ends of the zucchini and coarsely grate the zucchini. Transfer zucchini to a towel.
Fold over the ends and twist, squeezing excess liquid from the zucchini. Transfer zucchini to a medium mixing bowl.
Add the green onions, feta, herbs, lemon zest and eggs. Stir to combine. Sprinkle the flour, salt and pepper over and stir until you can no longer see the flour.
In a 12 inch saute pan (I like cast iron) , heat the oil over medium high heat.
When oil is hot but not smoking, drop 2 tablespoons of the zucchini mixture, evenly spacing them over the bottom of the pan. TIP: Drop a small amount of the fritter batter into the oil, if it starts to sizzle, then you know your oil is hot enough.
Flatten mounds lightly with a spatula and cook for 2 - 3 minutes until bottom is golden brown.
Flip zucchini cakes and cook until golden brown. Remove and drain on paper towels. Repeat with remaining zucchini mixture.