Aztec chicken casserole

Ingredients

• 2 Tbsp oil
• 12 corn tortillas
• 1 Tbsp oil
• 1/2 onion, diced
• 1 clove garlic, minced
• 1 (15 oz) can diced tomatoes
• 2 tsp oregano
• 1 tsp cumin
• salt, as needed
• pepper, as needed
• 1 Tbsp oil
• 1/2 onion, diced
• 1 zucchini, diced
• 1 (14 oz) can corn
• 3 poblano peppers, seeded, diced
• 1 jalapeno, seeded, minced
• 1 clove garlic, minced
• salt, as needed
• pepper, as needed
• jack cheese, grated, as needed
• sour cream, as needed
• guacamole, as needed