Combine first 4 ingredients in a large plastic bag. Let marinate 2-8 hours in refrigerator.
Grill chicken until cooked. Slice chicken, tomatoes, avocados, mixed greens, and onion.
Combine mayonnaise, lime juice, cayenne pepper, black pepper, and chicken in a bowl.
Place greens in a bowl. Place sliced onions, tomatoes and avocados on greens.
Cover salad with coated chicken. Serve and enjoy!
Submitted by: Tayler Oakes