Cook linguine until al dente according to instructions. Meanwhile, warm olive oil in a large pan over medium heat, add garlic and leeks and sauté until the leeks are tender and slightly golden.
Add capers, lemon juice and lemon zest and cook for a further 2 minutes. Reduce the heat and add the shrimps, stir in the pan (do not boil) and then remove from the stove.
Drain the pasta and place it in a large bowl with the spinach. Add the shrimp mixture and gently fold in.
Season to taste with salt and pepper and serve hot immediately.
Here you can find some of the ingredients for the recipe