Cook your base: Prepare rice, quinoa, or cauliflower rice according to package directions. Fluff and set aside to cool slightly before assembling.
Mix the fajita seasoning: In a small bowl, combine 2 teaspoons chili powder, 1 teaspoon cumin, 1 teaspoon smoked paprika, 1/2 teaspoon oregano, 1 teaspoon salt, and 1/2 teaspoon black pepper.
Adjust heat with a pinch of cayenne if you like.
Prep the shrimp: Pat shrimp dry with paper towels. In a bowl, toss shrimp with 1 tablespoon olive oil, half the fajita seasoning, 1 minced garlic clove, and the zest of 1 lime. Set aside for 10–15 minutes while you cook the vegetables.
Slice the vegetables: Cut bell peppers into thin strips and the red onion into thin wedges.
Keep pieces relatively similar in size so they cook evenly.
Sauté the peppers and onions: Heat 1–2 tablespoons olive oil in a large skillet over medium-high heat. Add peppers and onions, sprinkle with the remaining fajita seasoning, and cook 7–9 minutes until softened and slightly charred at the edges. Squeeze in half a lime, toss, and transfer to a plate.
Cook the shrimp: In the same skillet over medium-high heat, add a drizzle of oil if needed.
Add shrimp in a single layer. Cook 1.5–2 minutes per side until opaque and lightly seared. Avoid overcooking.
Finish with the juice of half a lime and the remaining minced garlic. Toss quickly and remove from heat.
Make a quick cilantro-lime finish (optional): In a small bowl, combine 2 tablespoons olive oil, juice of 1/2 lime, a pinch of salt, and 2 tablespoons chopped cilantro. This brightens the bowls without heavy sauces.
Assemble the bowls: Divide your cooked base among 4 meal prep containers.
Top with peppers and onions, then the shrimp. Drizzle with the cilantro-lime mixture if using. Add optional toppings like black beans, corn, or a few cherry tomatoes.
Cool and seal: Let the bowls cool uncovered for 10–15 minutes so condensation doesn’t make them soggy.
Seal and refrigerate.
Serve: Reheat gently and add fresh toppings like avocado, salsa, or a dollop of Greek yogurt just before eating. A wedge of lime on the side is always welcome.