Cook rotini, according to package directions, until al dente.
In large skillet, heat oil over medium-high heat. Season chicken with garlic powder, salt, and pepper. Saute chicken until browned on all sides. Remove chicken from pan.
Add water to skillet and pour in broccoli florets to steam them, tossing occasionally, until crisp-tender. (Note: cover the pan if you'd like to expedite the steam process)
Meanwhile, place carrots in a microwave-safe bowl and cover with water. Microwave for about 4 minutes, or until crisp-tender. Drain.
Add carrots, chicken, and corn to pan. Combine heavy cream and Ranch seasoning in a bowl and pour into pan.
Stir skillet contents and bring cream sauce to a boil. Reduce heat to medium-low and allow mixture to simmer for 4 minutes or until thickened slightly.
Add rotini to skillet and mix well to combine. Sprinkle with Parmesan.
Notes
I used heavy cream, but for a lighter version, you can try half and half.
Recipe by Simple, Sweet & Savory at https://www.simplesweetsavory.com/chicken-voila-copycat/