Take thawed shrimp and add to a bowl with 2 Tbsp olive oil, lemon zest, red-pepper flakes, 1 tsp salt, 1/2 tsp pepper and 3 cloves of the garlic, minced. You can do this up to an hour ahead, if you wish. Set bowl in refrigerator.
To a skillet set over medium heat, add butter, remaining olive oil and remaining garlic. When the butter bubbles, add orzo, 1 tsp salt and cook, stirring often. It will take roughly 3 minutes for the orzo to lightly toast. You may need to reduce the heat to keep the garlic from burning.
Add the wine (or broth, if using), and stir until it's absorbed. This will take about 1-2 minutes. Stir in the water and Bouillon, reduce heat to low, cover, and cook for about 12 minutes.
Add marinated shrimp in an even layer on top of the orzo. Cover and cook until the shrimp is pink and cooked through. This will take roughly 3-5 minutes.
Remove pan from heat and leave covered, for about 3 minutes.
Just before serving, sprinkle with parsley and lemon juice. You may want to add a bit of salt and pepper. Serve immediately.