Clean the zucchini thoroughly and trim off both ends. Using a spiralizer on the medium setting, transform your zucchini into noodle-like strands.
Place your zoodles in a colander over a bowl and sprinkle with ½ teaspoon of salt. Let them sit for 10 minutes to remove excess water. After sitting, gently press with paper towels to absorb additional moisture.
In a large skillet over medium heat, melt the butter until it begins to foam slightly. Add the minced garlic and red pepper flakes, cooking for 30-60 seconds until fragrant but not browned.
Add the prepared zucchini noodles to the garlic butter sauce, tossing continuously with tongs to coat evenly. Cook for just 2-3 minutes until al dente.
Remove the skillet from heat and immediately add lemon juice and Parmesan cheese, tossing quickly to combine. Season with fresh black pepper and additional salt if needed.
Garnish with chopped parsley and serve immediately for the best texture and flavor experience.