In a large pan, melt butter with 4 tbsp of water on medium low heat. Bring to a simmer (do not reduce water completely to prevent sauce from separating). Add lemon zest, lemon juice and season with salt and pepper. Cook ravioli according to packaging instruction. Strain and gently toss ravioli with chicken, zucchini and lemon butter. Simmer for 1 minutes longer on medium low heat. Plate ravioli and top with fresh basil.