Press the Sauté button and add the oil. Allow the oil to heat 1 minute and then add the onion, carrots, celery, and garlic. Cook until softened, about 5 minutes.
Add the turkey and cook until browned, about 3 minutes.
Add the chili powder, paprika, cumin, salt, pepper, and salsa and stir to combine. Press the Cancel button. Secure the lid.
Press the Manual or Pressure Cook button and adjust the time to 15 minutes.
When the timer beeps, quick-release pressure until float valve drops and then unlock lid.
To serve, spoon a portion of the taco meat into a romaine lettuce leaf and then top with sliced avocado.