Season the chicken: Pat chicken dry. In a bowl, combine salt, pepper, cumin, chili powder, and garlic powder.
Rub evenly over the chicken.
Sear and simmer: Heat oil in a large skillet over medium-high. Sear chicken 3–4 minutes per side until golden. Reduce heat to medium-low, add 3/4 cup salsa verde and 2 tablespoons lime juice.
Cover and cook 5–8 minutes, until chicken reaches 165°F and is tender.
Shred or slice: Transfer chicken to a board. Shred with two forks or slice thinly. Return to skillet and toss in the warm salsa verde.
Taste and adjust salt.
Prep the bases: Warm the rice or quinoa. Rinse and drain black beans. If using corn, warm it briefly in the skillet or microwave with a pinch of salt.
Chop the toppings: Dice onion, halve tomatoes, and chop cilantro.
Dice avocado just before serving and squeeze on a bit of lime to prevent browning.
Make the quick yogurt sauce: Stir the remaining 1/4 cup salsa verde into the Greek yogurt with a pinch of salt. This makes a creamy, tangy drizzle.
Assemble the bowls: Divide rice or quinoa among bowls. Top with salsa verde chicken, black beans, corn, tomatoes, onion, and avocado.
Spoon over the salsa verde yogurt, sprinkle with cilantro, and add jalapeño or cotija if you like. Serve with lime wedges.