Mexican Rotisserie Chicken Tostadas

INGREDIENTS

• 8 corn tortillas (6-inch size)
• 1 tablespoon cooking oil
• 8.5 ounces canned corn (drained)
• 1 1/2 cups cooked chicken, shredded
• 8 ounces salsa (store-bought or homemade)
• 2 tablespoons taco seasoning mix
• 15 ounces black beans (rinsed and drained)
• 2 cups shredded colby jack cheese
• Fresh cilantro leaves
• Tomatoes