Melt the butter with olive oil, sriracha, honey and garlic in a pan over medium high heat. Cook a few minutes.
Add shrimp & cook for 5-6 minutes or until cooked through (opaque); stir a few times. Mix in the chives.
Remove shrimp from the heat. Layer lettuce, shrimp, cheese, green onion, tomatoes, avocado and cilantro on top of tortillas. Serve while warm.