Heat olive oil and butter in a large skillet over medium heat.
Add minced garlic and red pepper flakes, sauté until fragrant (about 1 minute).
Add mixed seafood to the skillet and cook until just opaque and cooked through (about 3-4 minutes).
Pour in dry white wine and lemon juice, simmer for 2-3 minutes to reduce slightly.
Stir in lemon zest, salt, and black pepper to taste.
Add the cooked squid ink pasta to the skillet, tossing to coat in the sauce.
Mix in chopped parsley and grated Parmesan cheese.
Adjust seasoning if necessary and serve hot.