Mushroom Carnitas Burrito Bowls

Name: Mushroom Carnitas Burrito Bowls
Ingredients: 16 ounces portobello mushrooms; 2 tsp Extra-virgin olive oil; 1/2 cup orange juice; 2 tsp Mexican Oregano; 3 tbsp lemon juice (divided); 4 tsp garlic (minced & divided); 1 1/2 tsp Salt (divided); 1/2 tsp corriander; 1/2 tsp cumin; 2 tsp Chili Powder; 2 cups roasted corn (3 large ears ); 1 cup tomatoes (diced); 1/2 cup red onion; 2 tsp fresh jalapenos (diced); 15 ounces black beans (canned) (rinsed and drained); 4 cups shredded romaine lettuce; 1 medium Avocado; 1/2 cup black olives; 1 cup vegan pepper jack cheese (or cheese of choice)