Cook the pasta in boiling, salted water according to al dente package directions, drain, and return to the pot.
Add the evaporated milk, Parmesan cheese, and Italian seasoning packet to the pasta, stirring until the cheese is melted.
Heat the olive oil in a pan set over medium heat. Add the zucchini and fry, undisturbed, until browned on the bottom, then flip and brown the other side. Season to taste with salt and pepper, then remove to a plate (or add to the finished pasta if it’s already done).
Add the shallots, tomatoes, and crab to the skillet and saute until shallots are softened and tomatoes are bursting open and releasing their juices, about 6-8 minutes. This adds to the lovely sauce! Season to taste with salt and pepper.
Stir all of the vegetables into the prepared pasta, making sure they’re well coated in the sauce. Serve pasta with additional Parmesan cheese, to your preference.