In a large skillet over high heat, combine the “add first” ingredients. Stir and bring to a boil.
As soon as it boils, add the “add later” ingredients. Stir and bring back to a boil.
Boil, uncovered, for 5–9 minutes, stirring every minute or so to keep pasta from catching. Cook until pasta is almost done, but a tiny bit firmer than you want, and is still saucy. Remove skillet from heat and stir for another minute or so to let the sauce reduce and pasta finish cooking.
Stir through chicken. Add cheese, 1/4 cup at a time, stirring gently until melted.
Serve promptly, adding any desired toppings to individual plates. I love a scoop of sour cream, squeeze of lime, diced avocado, and some green onions or cilantro. Enjoy!
Notes
Note 1:Here’s the exact skillet I use and LOVE. Smaller skillets will take longer to cook.Note 2: Heat levels vary by brand; a mild variety (I love Old El Paso) is recommended.Note 3: For the most possible flavor, make your own (otherwise I recommend a good brand of taco seasoning (1 oz size) for the most flavor).
Note 4: Optional toppings: cherry tomatoes, green onions, cilantro, fresh lime, fat-free sour cream, olives, and guac or avocado.Storage: This dish is best enjoyed fresh, but you can store it in an airtight container in the fridge for up to 3 days or freeze for up to 3 months.