Barbecue Tofu with Cajun Rice

Name: Barbecue Tofu with Cajun Rice
Ingredients: 3 tablespoons extra-virgin olive oil; 1/2 onion, chopped; 2 stalks celery, chopped; 2 cloves garlic, minced; 1 1/4 cups converted white rice; 1 teaspoon Cajun seasoning; Kosher salt; 1 14-ounce package extra-firm tofu; 2 bell peppers (1 red, 1 green), thinly sliced; Freshly ground pepper; 1/4 cup barbecue sauce; 2 scallions, chopped; 3 tablespoons chopped fresh parsley