In a large skillet, combine peas, cream, garlic and 1/4 teaspoon of salt. Cover and simmer for about 5 minutes, until tender. Stir in spinach and cook uncovered until leaves are wilted. Remove pan from heat and mix in lemon zest and juice.
Meanwhile bring a large pot of salted water to a boil. Add gnocchi and cook until they float to the top, about 4 minutes. Drain gnocchi, reserving 1/2 cup of pasta water for final dish.
Toss hot gnocchi with hot sauce in saucepan and reserved pasta water. Stir to coat. Top with grated Parmigiano-Reggiano and serve.