Easy Mexican Chicken Bake Low Carb

lbs boneless skinless chicken breast halves

salsa (red or green, divided, I use refrigerated deli kind (lower in carbs than jarred kind))

diced green chilies (mild or hot, 1/2 of 4 ounce can)

can sliced black olives (drained, 4)

grated queso quesadilla cheese (or can use pepper jack cheese)

cheddar cheese

medium size avocado (chopped)

chopped cilantro for garnish * optional

sour cream garnish *optional