Heat nonstick skillet over medium heat, no oil necessary.
Add chicken, stir until cooked through.
Remove from heat, drain excess liquid.
Shred the chicken when cooled.
Combine the fish sauce and lime juice.
Toss together with cilantro, onion, shallots, mint, cayenne, rice powder, and ground chile/garlic paste.
Adjust seasoning to taste.
Serve immediately over lettuce leaves or thinly sliced cabbage.
Garnish with cilantro sprigs.