– 1.5 lb boneless skinless chicken breasts , about 2 chicken breasts – 1 teaspoon salt , more or less to taste – ½ teaspoon black pepper , more or less to taste – 1 large lime , zest and juice – 2 Tablespoons extra virgin olive oil , plus additional for skillet – 1 garlic clove , minced – ½ teaspoon ground cumin – ½ teaspoon chili powder – 1 large yellow onion , peeled and sliced into ¼ inch strips – 3 bell peppers , varied colors (red, yellow, green), sliced into ¼ inch strips