Start by rinsing the shrimp and drying them thoroughly with paper towels. Have all other ingredients ready at hand since this recipe cooks quickly.
Heat a large stainless steel skillet over medium-high heat and add one tablespoon of olive oil. Once hot, spread the shrimp evenly in the pan and season with about ¼ teaspoon of kosher salt and a pinch of black pepper. Let them sear undisturbed for roughly one minute until the side touching the pan shows a pink hue.
Give the shrimp a quick stir and flip them over. Season again lightly with salt and pepper. Cook for an additional minute until shrimp are just cooked through but still tender. Remove shrimp to a plate.
Add the remaining tablespoon of olive oil to the skillet then toss in the sliced zucchini. Sprinkle with the rest of the salt and pepper and cook, stirring occasionally, for 2 to 3 minutes until the zucchini starts to soften.
Stir in the butter and minced garlic, scraping any browned bits off the pan's surface. Let the mixture cook for another minute or two until the butter melts and fragrant aromas fill the kitchen.
Return the shrimp to the pan and pour in the lemon juice. Mix everything to combine and finish by sprinkling the fresh chopped parsley over the top. Serve hot right away for the best flavor and texture.