Loaded Chicken Taco Salad with Creamy Lime-Cilantro Dressing

olive oil

boneless skinless chicken breasts, cut into bite-sized pieces

packet taco seasoning, divided (I use reduced sodium, medium heat)

romaine lettuce

or 2 medium tomatoes, diced (I use vine-ripened; Roma or cherry tomatoes may be substituted)

canned corn, drained (fresh or frozen may be substituted)

canned black beans, drained and rinsed

medium Hass avocado, peeled and diced

shredded cheese (I use a monterey Jack and cheddar blend)

seasoned tortilla chips, crushed (I crush Doritos in my palm)

mayonnaise (lite okay)

sour cream (lite okay, plain Greek yogurt may be substituted)

to 4 tablespoons lime juice, or as necessary for flavor and consistency

cilantro leaves, minced

granulated sugar, optional and to taste