Start by seasoning the chicken breasts with cumin, paprika, garlic powder, onion powder, salt, and pepper on both sides.
In a large skillet, heat the olive oil over medium-high heat. Add the seasoned chicken breasts and cook for 6-7 minutes on each side, until they are cooked through and have a nice golden-brown color. Remove the chicken from the skillet and set aside.
In the same skillet, add the diced tomatoes, corn, and jalapeño (if using). Sauté for about 3-4 minutes until the tomatoes soften and release their juices.
Reduce the heat to low and pour in the heavy cream, stirring to combine. Allow to simmer for 2-3 minutes.
Gradually add the shredded cheese to the cream mixture, stirring constantly until melted and the sauce is creamy. Adjust seasoning with salt and pepper if needed.
Slice the cooked chicken breasts and return them to the skillet, coating them in the cheese sauce.
Let it simmer together for another 2-3 minutes for the flavors to meld.