Chicken and Avocado Skillet
Preheat oven to 450F.
Heat a large cast-iron skillet over medium-high heat. Add oil to pan; swirl to coat. Sprinkle chicken with 0.25 tsp salt, black pepper, and chili powder. Add chicken to pan; cook 4 minutes. Turn chicken over; cook 1 minute. Remove chicken from pan (chicken will not be fully cooked).
Wipe pan clean with paper towels. Coat pan with cooking spray. Increase heat to high. Sprinkle avocados with sugar. Add avocados, cut side down, to pan; cook 2 minutes or until charred. Remove avocados from pan. Recoat pan with cooking spray. Add red onions; cook 3 minutes or until charred. Turn red onions; add green onions and poblano. Cook 3 minutes. Separate red onions into rings; toss with green onions and poblano. Stir in lime juice and soy sauce. Nestle chicken and avocados into onion mixture. Place pan in oven; bake at 450F for 10 minutes or until chicken is done.
Remove pan from oven. Garnish with cilantro and lime wedges. Sprinkle with remaining 0.25 tsp salt and sour cream, if desired.