1Cook and drain fettuccine as directed on package.
2While fettuccine is cooking, cut pork into 1/4-inch slices; sprinkle with Cajun seasoning. Heat oil in 12-inch nonstick skillet over medium-high heat. Cook pork in oil 4 to 6 minutes, turning occasionally, until pork is slightly pink in center. Remove from skillet; keep warm.
3Spray same skillet with cooking spray; heat over medium-high heat. Cook onion in skillet about 4 minutes, stirring frequently, until onion begins to brown. Stir in zucchini and salt. Cook about 4 minutes, stirring frequently, until vegetables are tender. Stir in remaining ingredients. Cook about 1 minute, stirring frequently, until heated through.
4Toss vegetable mixture and fettuccine. Serve pork over fettuccine mixture, or toss pork with fettuccine mixture.