Heat about 1 tablespoon of oil in a large skillet over medium-high heat.
Season each chicken breast with ¼ teaspoon chipotle powder (or your favorite southwestern seasoning) and sea salt.
Place chicken breasts in the pan and cook on the first side for about 4-6 minutes or until browned, then flip and brown the other side another 3-5 minutes. (It's ok if they're not fully cooked through as you will be returning them to the pan.)
Remove chicken from pan and set aside on a plate.
To the pan, add diced tomatoes, lime juice, onion powder, garlic powder, cumin and chili powder; whisk to combine, scraping up the brown bits from the bottom of the pan.
Bring to a simmer, then reduce the heat to medium-low and return the chicken breasts to the pan, nestling them into the sauce.
Cover pan and simmer for another 8-10 minutes until the chicken is fully cooked through.
Remove chicken once again and whisk cream into the sauce. Pour sauce into a blender (or use an immersion blender) and blend for a smooth sauce, or leave as is for a chunky sauce.
Serve chicken with your favorite side with sauce ladled over top.