Step 1Combine the chicken, salt, pepper and garlic in a bowl. Heat the oil in a large skillet over medium heat and cook the chicken, stirring, until cooked through, about 7 to 8 minutes. Set aside.
Step 1Heat the oil in a skillet over medium heat. Add the onion and the garlic and cook, stirring, until the onion has softened, about 4 minutes. Add the beans and cook, lightly mashing the beans with the back of a wooden spoon until hot, about 6 to 7 minutes. Set aside.
Step 1Heat the oven to 350 degrees.
Step 2Cut each tortilla into a triangle that is about 5 inches on 2 sides and 3 inches on the bottom side. Reserve the leftover tortilla pieces.
Step 3Heat one-half inch of oil in a skillet over medium-high heat. Fry the triangles, in batches, until light golden brown. Drain on paper towels. Fry the remaining pieces, if desired, and use as chips.
Step 4Arrange the triangles on 2 baking sheets. Divide the chicken, beans, olives and cheese among the triangles.
Step 5Bake until the cheese has melted and the ingredients are warmed through, 8 to 10 minutes. Remove from the oven and top each with the guacamole, sour cream and salsa. Serve immediately.