Fluffy Vegan Omelette

Name: Fluffy Vegan Omelette
Ingredients: 1 block firm tofu; 2 tbsp nutritional yeast; 1 tsp turmeric powder; 1 tsp Indian black salt (Kala Namak); 1/4 cup liquid from a can of cooked chickpeas (you can use liquid from home cooked chickpeas too); Avocado oil cooking spray (optional if you have it); 1 tbsp avocado or olive oil; 1/2 yellow onion (sliced); 2 cloves garlic (minced); 1/2 bell pepper (sliced); 1 roma tomato (diced (or any type of tomato, about 1/2 cup diced)); 1 zucchini (diced); 1/2 tsp salt + more to taste; 2 handfuls raw or frozen spinach