Step 1: Season the Chicken - Start by adding the bite sized chicken pieces to a large bowl. Sprinkle in the salt, pepper, cumin, paprika, onion powder, and red pepper flakes. Give everything a really good stir so every piece of chicken gets evenly coated in those smoky spices. This step may seem simple, but it is where all that bold flavor starts building. I like to take an extra minute here to make sure the seasoning gets into every corner because it makes a huge difference once the chicken starts cooking.
Step 2: Sear the Chicken and Vegetables - Heat the vegetable oil in a large high sided skillet over medium high heat. Once the oil is hot, add the seasoned chicken along with the sliced bell peppers and onions. Spread everything out as evenly as possible and let it sit for a minute before stirring. That little bit of patience helps the chicken develop a beautiful golden color and gives the vegetables those slightly charred edges that add incredible flavor. Cook everything for about eight to ten minutes, stirring occasionally, until the chicken is fully cooked and the vegetables are soft. The smell at this point is honestly amazing. The cumin and paprika mixed with the peppers and onions fills the kitchen with that warm southwest aroma that makes everybody wander into the kitchen asking when dinner will be ready.
Step 3: Boil the Tortellini - While the chicken and vegetables cook, bring a pot of water to a boil and cook the frozen cheese tortellini according to the package directions. Tortellini cooks pretty quickly, so keep an eye on it. Once the pasta is tender, drain it well. One little trick here is to handle the tortellini gently when draining and stirring later on. Those cheesy pockets are delicate, and you want them to stay intact so every bite stays rich and creamy.
Step 4: Combine Everything Together - Add the drained tortellini straight into the skillet with the chicken and vegetables. Pour in the southwest ranch sauce and gently stir everything together until fully coated. The sauce will melt into all the little folds of the tortellini and wrap around the chicken and vegetables perfectly. At this point, the whole skillet becomes creamy, smoky, cheesy comfort food magic. Every spoonful has tender chicken, flavorful vegetables, and cheesy pasta coated in that rich southwest ranch flavor. Serve it warm and watch it disappear fast.