Next, add in the chicken and sauté on all sides until golden brown (about 5-7 minutes total). Remove the chicken from the skillet and drain the oil.
Return the skillet to medium heat and add in the spinach, diced tomatoes (with liquid), cannellini beans (with liquid), salt, black pepper, and garlic powder.
Bring to a simmer and cook for 5 minutes, mixing occasionally.
Next, add the chicken back into the skillet. Bring to a simmer and cook for 5 minutes, mixing occasionally.