In a mixing bowl, combine mayo, ketchup, garlic powder, paprika, and hot sauce to make the yum yum sauce. Set aside.
In a skillet, melt 1 tablespoon of butter over medium heat. Add shrimp and cook until pink. Add 2 tablespoons of soy sauce and mix well. Remove shrimp from skillet and set aside.
In the same skillet, melt another tablespoon of butter. Add zucchini and onion, cooking until tender. Push vegetables to the side and scramble the egg in the skillet.
Add peas and carrots, cooked rice, and remaining soy sauce to the skillet. Stir to combine and heat through.
Serve the rice mixture in bowls topped with shrimp and drizzle with yum yum sauce.
Notes
You can adjust the amount of hot sauce based on your spice preference.