Place diced bell pepper, onion, corn, pomegranate seeds, green onions, cilantro, oil, cumin, chili powder, and salt in a large bowl, and stir to combine. Store in the refrigerator until ready to use.
To make the Dressing:
Place cilantro, garlic, vinegar, honey, and orange juice in the bowl of a food processor or blender. Blend to chop ingredients. Slowly pour in the olive oil while machine is running. Process to desired consistency. Store in refrigerator until ready to use.
To make the Salad:
Place lettuce on a large platter or in a large bowl. Add the chicken and salsa. Toss to combine.