Prepare the Yum Yum sauce by whisking mayonnaise, ketchup, melted butter, garlic powder, paprika, sugar, and water in a small bowl until smooth; refrigerate for at least 20 minutes.
Whisk together honey, minced ginger, minced garlic, soy sauce, sriracha, and sesame oil in a small bowl to create the glaze.
Heat a large non-stick skillet over medium-high heat with a small amount of neutral oil.
Add chicken cubes to the skillet in a single layer and sear until golden brown and the internal temperature reaches 165°F (74°C), approximately 6 to 8 minutes.
Pour the honey-ginger glaze over the cooked chicken and simmer for 2 to 3 minutes until the sauce reduces to a thick, glossy coating.
Distribute the cooked jasmine rice into four serving bowls.
Top each bowl with a portion of the glazed chicken and steamed broccoli florets.
Drizzle the prepared Yum Yum sauce over the chicken and vegetables.
Garnish with sliced green onions and toasted sesame seeds before serving.