Step 1

Season chicken with salt and pepper.

Step 2

Heat oil in a deep skillet over medium heat. Add chicken and saute until no longer pink in the center and the juices run clear, 6 to 8 minutes. Remove chicken to a plate.

Step 3

Add shallot and garlic to the skillet and cook for about 2 minutes. Add tomatoes and cook 2 more minutes. Add condensed soup, chicken broth, and sour cream; stir to combine. Add spinach and cook for 5 minutes.

Step 4

Serve on plates and top with shredded mozzarella cheese.