Instant Pot Shredded Chicken Tacos

Ingredients

For 4 servings, as the recipe is written

• 1 tablespoon extra-virgin olive oil (divided)
• 2 pounds boneless, skinless chicken breasts ((about 4 small/medium or 3 medium/large), cut in half if large)
• 1 1/2 teaspoons kosher salt (divided)
• 1/2 teaspoon ground black pepper
• 1 small yellow onion (or 1/2 large yellow onion, thinly sliced)
• 4 cloves garlic (minced)
• 2 teaspoons chili powder
• 3 chipotle peppers in adobo
• 1 can diced tomatoes in their juices ((14 ounces))
• 1/4 cup freshly squeezed lime juice (from about 1 medium lime)
• 1 ripe avocado (peeled and pitted)
• 3/4 cup nonfat plain Greek yogurt
• 2-4 tablespoons fresh lime juice
• 1/4 teaspoon kosher salt
• Tortillas or taco shells of your choice
• Any other bonus toppings: fresh cilantro