Place chicken in the shielded colander of the Tupperware® Smart Multi-Cooker, season with ½ tsp. of the salt and pepper and set aside. In the shallow colander, combine squash and onions, season with ¼ tsp. of the salt and set aside.
In the base/water reservoir of the Smart Multi-Cooker, stir together remaining salt, pasta and water (filled to the ring indentation in the base). Microwave, uncovered, on high power 3 minutes. Remove from microwave.
Place shielded colander with chicken inside base (without removing pasta). Cover with shielded cover and microwave on high power 8 minutes.
While chicken begins to cook, make the sauce. In the base of the Power Chef® System fitted with the blade attachment, combine bell pepper, feta, tomato paste, garlic, oregano, cream, vinegar, salt and pepper. Cover and pull cord until pureed.
Transfer mixture to the 2-cup/500 mL Micro Pitcher. Microwave on high power 45 seconds. Stir and microwave 45 seconds more.
Remove Smart Multi-Cooker from microwave. Place shallow colander with vegetables on top of shielded colander. Cover with shielded cover and microwave on high power 3 minutes more. Remove from microwave. Transfer chicken and vegetables to a large bowl. Drain pasta using the shielded colander and transfer to bowl with chicken and vegetables; set aside.