Bring a large pot of salted water to a boil and cook the angel hair pasta according to package instructions until al dente.
While the pasta cooks, heat the extra virgin olive oil in a large skillet over medium heat.
Add the minced garlic and red pepper flakes to the skillet, sautéing for about 1 minute until the aroma is fragrant.
Increase the heat slightly and add the shrimp to the pan, seasoning with sea salt and black pepper.
Cook the shrimp for 2 to 3 minutes per side until they are pink, opaque, and fully cooked.
Stir in the baby spinach and cook for 30 seconds until the leaves are just wilted.
Reserve 2 tablespoons of the pasta cooking water, then drain the remaining water from the noodles.
Add the cooked pasta, reserved water, lemon juice, and fresh parsley to the skillet with the shrimp.
Toss everything together over low heat for 1 minute to allow the sauce to emulsify and coat the pasta strands evenly before serving.