Picture a cast-iron skillet hissing with garlicky shrimp while ribbons of red and green bell pepper soak up citrusy pan juices — your kitchen will smell like a beach-side taquería.
Sear the veggies: Heat oil in a large skillet over medium-high until shimmering. Add peppers and onions; sprinkle with half the salt. Sauté 3 min, stirring once, until edges char.
Season shrimp: While veggies cook, toss shrimp with garlic, chipotle, cumin, remaining salt, pepper, lime zest, and 1 Tbsp lime juice.
Add shrimp & sizzle: Push veggies to edges; drop shrimp into hot center in a single layer. Cook 1½ min, flip, and cook 1 min more until just pink.
Glaze & finish: Splash in remaining lime juice; toss everything together for 30 sec so the sauce coats. Remove from heat, sprinkle cilantro, and serve sizzling.