Preheat oven to 400 degrees.
Cut chicken into bite-sized pieces. Sprinkle with taco seasoning and salt.
Heat a tablespoon of olive oil in a 10" skillet and cook chicken until no longer pink; about 5 minutes. Remove from heat and stir in black beans and salsa.
Fill taco shells with meat mixture and arrange standing up in a 13"x9" baking dish. Sprinkle with shredded cheddar.
Bake at 400 degrees for about 10 minutes or until cheese is completely melted.
Top with your favorite taco toppings and serve immediately.