Cook pasta according to package instruction. Reserve ½ cup of pasta water then drain well and set aside.
Chicken
Heat a medium sized pan over medium/high heat, grease with cooking spray.
While the pan heats up, season both sides of the chicken breast with the seasonings.
Add chicken to the pan and sear both sides for about 3 minutes each. Cover the pan and reduce heat to medium. Allow chicken to steam in the pan until fully cooked, about 5 minutes.
Remove chicken from pan, shred it up and then set aside.
Sauce
Without cleaning, spray the pan with more cooking spray, bring back up to medium/high heat.
Add diced bell pepper and saute while scraping up the bits from the bottom of the pan. Cook for about 2 minutes.
Then, add the diced onion and minced garlic. Saute for 3-4 more minutes, until translucent and fragrant.
Add half a can of rotel tomatoes, without the juice. Mix that into the peppers and onion while crushing up the tomatoes. Add in more cumin, salt and pepper to taste.
Add the cream cheese and reduce to medium/low heat. Stir together while the cream cheese melts.
Add the shredded cheese and mix to melt the cheese.
Add in the pasta water, until desired consistency. I use about a ¼ cup.
Once the cheese is all melted and desired consistency is reached, add in the cooked, shredded chicken and toss to coat. Add in the cooked pasta and toss to coat.