Add the chicken to the slow cooker.
Sprinkle over the salt, pepper, garlic powder, onion powder, chili powder and cumin.
Add the Rotel tomatoes (with juices) and chicken broth, to the slow cooker.
Cover and cook on LOW for 4–6 hours or HIGH for 3–4 hours, until the chicken is tender and cooked through.
Remove the chicken from the slow cooker and shred it using two forks.
To the slow cooker add the cream cheese and heavy cream until smooth.
Return the shredded chicken to the slow cooker and stir to combine.
About 20–30 minutes before serving, cook the rotini pasta according to package directions until just tender, then drain well.
Stir in the shredded cheeses until melted and fully combined.
Add the cooked pasta to the slow cooker and gently stir until everything is evenly coated in the queso sauce.
Let sit for a few minutes to thicken, then serve warm.
Top with more shredded cheese if desired and serve!
Garnish with parsley, scallions or jalapenos (optional)