Boil salted water, cook linguine 9–11 minutes, reserve ½ cup pasta water and drain.
Mix panko, butter, Parmesan, lemon pepper, Cajun seasoning, coat shrimp.
Pan fry shrimp 3 minutes per side until golden, set aside.
Cook onions and tomatoes in butter 3–4 minutes, add garlic.
Add wine and reduce, stir in cream, Parmesan, seasonings, lemon juice and zest.
Toss pasta with sauce, loosen with pasta water if needed.
Serve topped with shrimp, parsley, and extra lemon zest.