In a blender or food processor, combine the can of tomatoes, chipotle peppers, adobo sauce, oregano, cumin and green onions. Blend together until smooth.
Trim the chicken breast and cut each breast into 3-4 large pieces. Add them to the instant pot. Pour in the sauce mixture and stir so the the chicken is well coated to prevent burning. Cook on high pressure for 7 minutes.
Allow the pot to vent naturally when finished. Remove the chicken pieces from the pot to shred then add back into the instant pot. Mix well with the sauce.
To assemble the tacos, top the tortilla with the chicken and avocado crema. Top with other favorite toppings such as avocado, cilantro and squeeze a lime wedge over the top.
In a blender or food processor, combine the avocado, yogurt, lime juice, cilantro. jalepeño and salt. Blend until smooth.
Serve on tacos, nachos, tostadas or even eggs!
*Chipotle Peppers in Adobo Sauce: Can sometimes be hard to find and are usually found in the isle with the taco shells and salsas.
*Spiciness level: 1-2 peppers depending on how spicy you like it. I'm not a huge fan of spicy and one pepper is plenty fo me.
*Tortillas: My favorite grain- free tortillas are from Siete Foods.