In the Instant Pot, add the Coconut Oil & turn push Saute.
Add the chicken (bone-in has much more flavor than boneless)
Top the chicken with the poblano peppers, anaheim peppers, jalapeno, onion, garlic, tomatillos, cumin, and salt.
Add chicken broth.
Lock the lid on the Instant Pot and set for manual (High) for 15 minutes.
When the pot beeps (is done), remove chicken and shred - set aside.
If you are using cilantro & fish sauce, add at this time, then use your immersion blender to blend, then season with salt & pepper.
Remove the bones from the chicken, and add the shredded chicken to the sauce - mix well.
Serve with warm tortillas, chopped cilantro, and wedges or lemon or lime.