Begin by washing and drying the romaine lettuce. Chop it into bite-sized pieces and place it in a large salad bowl.

Incorporate black beans, corn kernels, diced red bell pepper, halved cherry tomatoes, sliced red onion, minced jalapeño pepper, and chopped cilantro into the bowl.

In a separate small bowl, whisk together lime juice, olive oil, ground cumin, and chili powder. Season with salt and black pepper to taste.

Pour the dressing over the salad ingredients in the large bowl. Toss gently to coat evenly.

Fold in the diced avocado, being careful to keep it intact.

Sprinkle crumbled feta cheese over the top of the salad.

Serve immediately or chill for up to 30 minutes before serving.