Prep the fennel: Remove the tough fennel stems and the core. Cut the rest of the fennel into big pieces, then use a food processor to chop the fennel into small pieces.
Prep the other veg: Thinly slice the 2 spring onions, greens included. Finely chop the leaves of the 40 g parsley (about 1 cup of leaves) and the leaves of the 20 g dill (about ¼ cup leaves).
Mix batter ingredients: Mix the vegetables together in a large bowl, then add the 2 eggs, ¾ tsp salt, ¼ tsp black pepper, and 2 tbsp lemon juice. Finally, stir in 165 g chickpea flour.
Pan fry: In a pan over medium-high heat, heat about ½ cm (¼ inch) depth of olive oil (enough to go about halfway up the fritters once they are in the pan). Once the oil is hot, add a heaping spoonful of batter to the pan and flatten with the back of your spatula to make a patty about 1 ½ cm (1 inch) thick. My fritters were about 2 inches (5 cm) wide. Depending of the size of your pan, you may cook several fritters at the same time. Let cook 3 to 4 minutes per side, until golden brown.
Serve with the chilled tzatziki sauce.