Place zucchini in a colander and toss with salt. Place in the sink or over a bowl and allow to drain for 30 minutes.
Gently squeeze all the excess moisture from the zucchini and place in a large mixing bowl.
Add scallions, parsley, garlic, lemon zest, black pepper and ricotta. Taste for seasoning. Add more salt if needed.
Add the eggs and flour and stir to combine until flour is no longer dry.
Place a cooling rack over a baking sheet.
Heat oil over medium-high heat until shimmering, being careful it does not smoke.
Working in batches, add the zucchini batter in 2-tablespoon mounds to the hot oil, carefully spreading them out to create 3-inch fritters.
Fry over medium-high heat until browned on both sides, approximately 3-minutes, flipping once.
Drain on the cooling rack and repeat with remaining batter.
Serve immediately with yogurt and lemon wedges. Sprinkle with chopped fresh chives.