In a large nonstick skillet, cook beef over medium heat 6-8 minutes or until no longer pink, breaking into crumbles; drain. Sprinkle taco seasoning over beef; stir to combine. In a small bowl, mix salsa and lime juice.
Arrange tortilla chips on a serving platter; layer with lettuce, tomatoes, beans, cheese, yellow pepper, beef mixture, onion, salsa mixture and sour cream. Serve immediately.