1. In a large bowl, combine turkey, onion, jalapeño, egg, cumin & Worcestershire sauce. Create 12 slider-sized patties.
2. Heat a skillet over medium. Add half the patties to skillet. Cook 4-5 minutes per side or until cooked through. Remove from heat & top with cheese. Repeat with remaining patties.
3. In a small bowl, mix mayonnaise & chipotle powder. Spread ½ Tbsp of mayo onto each roll.
4. Serve each patty on a roll with lettuce, tomato & avocado.