1. In a small bowl, whisk together mayo, yogurt, sriracha, and a dash of salt and pepper.
2. Pour mixture over chopped eggs and mix.
3. Add green onion, 3 slices of crumbled bacon and cubed avocado, and mix gently.
4. Taste and add more salt and pepper if needed.
5. Divide greens evenly among bread and top with egg salad.
6. Garnish with remaining slice of crumbled up bacon.