Tex Mex Rice and Beans with Zucchini

Name: Tex Mex Rice and Beans with Zucchini
Ingredients: 1 cup brown rice (I used jasmine)*; 1 large onion, finely chopped; 3 garlic cloves, minced; 1 tbsp coconut or avocado oil; 2 tsp taco seasoning; 2 tsp cumin, ground; 1 tsp coriander, ground; 1 1/2 tsp salt (more or less to taste); Ground black pepper, to taste; 3 medium zucchini, cut in half moon shapes; 2 cups corn (frozen or canned); 14 oz can black beans, rinsed & drained (I cook my own); 14 oz can diced tomatoes; Cilantro, green onions, tortilla chips, cheese, optional and to taste