Heat a pan over medium-high heat. Add the ground beef, breaking it into small pieces with a spatula, and cook for about 8 minutes until it starts to brown. Drain any excess fat from the pan.
Stir in the taco seasoning and cook for an additional 1 to 2 minutes.
In a large bowl, layer the chopped lettuce with the seasoned ground beef, black beans, grape tomatoes, avocado, red onion, and shredded cheese.
Top with salsa, fresh cilantro, and a squeeze of lime juice. Season with kosher salt and ground black pepper to taste, and serve with tortilla chips if desired.