Cook angel hair pasta according to package directions and set aside.
While pasta is cooking, place large, nonstick skillet over medium heat. Spray with nonstick cooking spray. Add in chicken pieces, garlic powder, salt and pepper and brown, stirring constantly. Add in red bell pepper and grated carrot and cook 1-2 minutes. I don't like my veggies too soft, so I don't cook them too long. If you'd like them softer, cook them longer.
Add in soy sauce, Worcestershire sauce, sweet chili sauce and green onions. Cook 1-2 minutes more and remove from the heat.
For the peanut butter sauce, measure out powdered peanut butter into a small bowl. Add enough water to turn it into a drizzling consistency, 1-2 tablespoons.
To serve, divide pasta evenly between butter lettuce leaves. Top with chicken mixture and top with cilantro and chopped nuts. Serve with lime wedges.
Notes
The more accurate macros for this recipe for 1 serving (1/4th): 289 calories, 3.9g F/32.6g C/40.4g P