Place the chicken breast, water, salsa verde, chili powder, cumin, garlic powder, and sea salt into the Instant Pot.
Secure the lid and set the valve to sealing; cook on high pressure for 10 minutes.
While the chicken cooks, finely dice the red bell pepper and red onion.
Heat the olive oil in a skillet over medium heat and sauté the bell pepper and onion until they are soft and slightly caramelized.
Perform a quick pressure release on the Instant Pot, remove the chicken, and shred it using two forks.
Return the shredded chicken to the pot to toss with the remaining spicy cooking liquid.
Warm the tortillas in a dry pan, then layer each with cooked quinoa, black beans, sautéed vegetables, and the shredded chicken.
Top with fresh avocado slices, roll tightly, and serve immediately.