PREHEAT oven to 375 F (oven rack should be in the center position); SPRAY a 3 quart casserole dish with cooking spray; SHRED or dice rotisserie chicken removed from from bones to make 4 cups; CHOP the veggies for CHEESY CHICKEN FILLING; BREAK enough reduced-sodium yellow corn tortilla chips into coarse pieces to make approximately 3 cups.
WHISK together the first five CHEESY CHICKEN FILLING ingredients in a large bowl (1 (10 3/4 ounce) can condensed cream of chicken soup, 1 (8 ounce) container sour cream, 1 1/2 teaspoons ground cumin, 1 dash garlic powder, 1 dash oregano).
POUR 1/2 cup of the ENCHILADA VERDE SAUCE into the greased 3 quart baking dish.
ARRANGE 1/2 (1 1/2 cups) of the MOCK CORN TORTILLAS (reduced-sodium tortilla chips) evenly over ENCHILADA VERDE SAUCE in baking dish.
POUR 1/3 cup ENCHILADA VERDE SAUCE evenly over the tortilla chips.
SPREAD 1/2 (HALF) of the CHEESY CHICKEN FILLING mixture over the ENCHILADA VERDE SAUCE.
POUR 1/3 cup ENCHILADA VERDE SAUCE evenly over the CHEESY CHICKEN FILLING.
REPEAT the process, between steps 4-7 (ending with the remaining ENCHILADA VERDE SAUCE).
SPRINKLE with 8 ounces of the remaining reserved shredded Mexican cheese TOPPING; GARNISH with reserved sliced green onions and sliced black olives.
BAKE casserole, covered with tented foil or casserole lid, for 40-45 minutes at 375°F; REMOVE foil or cover carefully to allow casserole to cool and set for 7-10 minutes before cutting and serving. SERVE with Tabasco brand green pepper sauce if desired and ENJOY!