1Cook pasta as directed, drain. Spray a lg skillet w/ cooking spray. Place over med-high heat. Add onion and red bell pepper. Saute 4 mins.
2Reduce heat to medium. Add garlic, chili powder, cumin, sugar, oregano and salt. Cook, stirring for 30 seconds.
3Pour in tomato sauce and 1 cup water, stir. Simmer 2 mins. Cover, simmer 5 mins. Add chicken to sauce, stir to coat. Add pasta and toss to coat. Reduce heat to low. Sprinkle cheese over all. Cover and cook 1 min. Remove from heat. Serve w/ sour cream.