Wash the zucchini and trim the ends. Use a spiralizer to turn the zucchini into noodles and set aside.
Heat olive oil in a large skillet over medium-high heat.
Place shrimp in a single layer in the pan and season with salt and pepper. Cook for about 1 minute without stirring so the bottom develops a slight crisp.
Add the chopped garlic and stir the shrimp for another 1–2 minutes until cooked through.
Transfer shrimp to a plate and set aside.
In the same pan, add butter, lemon juice, lemon zest, red pepper flakes, and chicken broth. Simmer for 2–3 minutes while stirring to combine the flavors.
Stir in chopped parsley.
Add the zucchini noodles and toss gently for about 30 seconds to warm them.
Return the shrimp to the pan and toss everything together for another minute.
Serve immediately. This Zucchini Pasta with Lemon Garlic Shrimp tastes best fresh from the pan.