Cook the rotini according to package instructions. While the rotini is cooking, heat the olive oil in a large skillet over medium-high heat.
Add the chicken and cook until no longer pink. Season with salt and pepper to taste. Add the minced garlic, and chopped bell pepper. Cook until the bell pepper begins to soften, stirring often.
In a bowl, mix together the Hidden Valley Ranch Roasted Garlic Dressing and milk. Pour over chicken and reduce heat to low.
Drain the water from the rotini when it is done cooking. Add the cooked rotini and tomatoes to the skillet. Gently stir to get everything coated in sauce. Sprinkle with cheese and cover with a lid. Leave the skillet covered on low heat about 10 minutes or until the cheese has melted.
Recipe by Cute As A Fox at https://www.cuteasafox.com/2015/07/roasted-garlic-ranch-chicken-skillet-dinner.html