Begin by spiralizing the zucchinis into zoodles using a spiralizer. If you don’t have one, you can use a vegetable peeler to create thin strips. Set aside.
In a large skillet, melt the butter over medium heat. Add the minced garlic and red pepper flakes, sautéing for about 1 minute until fragrant, making sure not to burn the garlic.
Add the shrimp to the skillet and season with salt and pepper. Cook for 2-3 minutes, flipping halfway through, until the shrimp is pink and opaque.
Stir in the lemon juice and zest, combining well with the shrimp and garlic butter mixture.
Fold the zoodles into the skillet, tossing them gently to coat in the sauce. Cook for an additional 2-3 minutes, just until the zoodles are tender but still slightly crisp.
Remove from heat, and stir in the fresh parsley. Adjust seasoning with salt and pepper if needed.
Serve immediately, garnished with grated Parmesan cheese if desired.
Notes
Adjust red pepper flakes to taste for desired spiciness.