Southwest Beef Lettuce Wraps

Name: Southwest Beef Lettuce Wraps
Ingredients: 1 tablespoon olive oil; 1 red bell pepper, diced; 1 jalapeno, diced; 1/2 yellow onion, diced; 2 pounds ground beef; 1/2 teaspoon chili powder; 1/2 teaspoon ground cumin; 1/2 teaspoon kosher salt; 1/2 teaspoon ground black pepper; 1/4 teaspoon crushed red pepper; 8 medium inner romaine lettuce leaves (from a romaine heart); 1 cup shredded pepper jack cheese; 1/2 cup chopped tomatoes; 2 red onions, diced; 2 avocados, each sliced into 8 slices; 2 ears fresh corn, cooked and kernels sliced off; 1 container sour cream; 1/2 cup fresh cilantro leaves; 2 limes, each cut into 4 wedges