In a large bowl, combine chicken tenderloins, coconut milk, lime juice, olive oil, dried cilantro, garlic powder, kosher salt, and crushed red pepper flakes and stir until fully combined. Cover with plastic wrap and marinate in the refrigerator for at least 1 hour (or up to overnight).
In a small bowl, combine peanut butter, sesame oil, soy sauce, lime juice, garlic powder, Sriracha, honey, and salt. Stir until combined. Set aside.
Preheat oven to 375 degrees Fahrenheit. Grease a baking sheet with olive oil and add chicken tenderloins from the marinade. Bake in preheated oven for 20 minutes, flipping halfway through.
While the chicken is baking, assemble the lettuce wraps and toppings: prepare butter lettuce leaves by washing and drying them, shred carrots, chop fresh cilantro, and prepare Asian cucumber salad. Set aside when done.
Once the chicken has finished baking, remove it from the oven and place it in a bowl. Drizzle peanut sauce over the chicken and toss to evenly coat.
Assemble your lettuce wraps: place one piece of chicken tenderloin onto each butter lettuce leaf. Top with shredded carrots, fresh cilantro, sesame seeds, and Asian cucumber salad. Serve immediately.