In small bowl, mix together lemon juice, garlic, honey, Adobo Light and crushed red pepper. Using whisk, add olive oil in slow steady stream, whisking constantly to combine. Stir in cilantro; set aside.
Heat oven to 425°F. Place chicken on foil-lined baking sheet. Drizzle with oil and sprinkle with Sazón Natural and Complete. Bake chicken until golden brown and cooked through, about 15 minutes. Set chicken aside to cool. Cut into strips.
Arrange lettuce on large serving platter. Toss with reserved chicken, avocado, grapefruit and onions. Drizzle with dressing before serving.