Spaghetti Squash Burrito Bowls

Name: Spaghetti Squash Burrito Bowls
Ingredients: 1. 2 medium spaghetti squash; 2. 1 lb. lean ground beef or ground turkey; 3. 1 small onion, finely chopped; 4. 2 sweet bell peppers, finely chopped; 5. 4 garlic cloves, crushed; 6. 14 oz. red kidney or black bean beans, drained & rinsed (optional); 7. 1/2 tsp. chili powder; 8. 2 tbsp. diced canned chilies or jalapeños (or to taste); 9. 1 cup tomato sauce; 10. 1/2 cup cilantro, finely chopped + more for garnish; 11. 4 blue containers Colby jack or Mexican cheese, shredded & divided; 12. 1/4 tsp. salt; 13. 1/2 tsp. freshly ground black pepper