Pour 1 tablespoon olive oil into a large skillet. Heat over medium-high heat.
Add in the 2 boneless skinless chicken breast on one side and the sliced 1 medium red bell pepper, 1 medium green bell pepper and 1 medium white onion on the other side.
Sprinkle the whole skillet with 1/2 teaspoon salt, 1 teaspoon chili powder, 1 teaspoon ground cumin, and 1 teaspoon garlic powder.
Toss the peppers and onions occasionally and let saute 3 to 5 minutes. Flip chicken and continue cooking another 3 to 5 minutes (tossing peppers occasionally) until the chicken is cooked through to an internal temperature of 165°F.
Remove the pan from the heat and slice the chicken.
In a small bowl, whisk together remaining 1/4 cup extra virgin olive oil, 1/4 cup lime juice, 1 teaspoon salt, 2 teaspoons granulated sugar, and 1 teaspoon crushed red pepper flakes.
Compile two individual salads, or one big salad by adding chopped 1 head romaine lettuce to a bowl or plates. Top with chicken, peppers and onions, and sliced 1 medium avocado. Drizzle dressing on top.