In a large skillet, heat oil over medium heat. Add pepper and onion; cook and stir until tender, 5-7 minutes. Add garlic; cook 1 minute longer. Stir in crumbles, 3/4 cup salsa, chili powder and cumin; cook and stir until heated through, 3-5 minutes.
In a large bowl, combine lettuce, beans, tortilla chips, corn, tomato, avocado, cilantro and crumble mixture. Combine remaining salsa and vegan ranch, poor over salad and toss to coat. If desired, serve with lime wedges.