Finely chop chicken breasts. Set asideIn a small bowl, whisk together soy sauce, agave, rice wine vinegar, sesame oil, and sriracha. Set aside
Warm up medium skillet over high heat. Add oil. Toss in chicken when oil is warmed up. Cook 3-4 minutes until fully cooked, stirring when needed. Add in half of sauce. Cook for an additional 1-2 minutes until chicken is well coated with sauce and sauce has thickened. Remove from heat.
Add 1 tbsp peanut butter to remainder of sauce mixture. Whisk well until no lumps remain.
Separate lettuce on a platter. Spoon 2 tbsp of chicken mixture on each cup. Top with cucumber, carrots, peanuts and garnish. Serve with peanut sauce