Pat shrimp dry and toss with 1/4 tsp. salt and 1/4 tsp. pepper in a medium bowl.
Cook oil and sliced garlic in a large skillet over medium heat, stirring often, until garlic is golden and crisp – 3-4 minutes. Using a slotted spoon, transfer garlic to small bowl.
Add bell pepper and pepper flakes to skillet and cook until bell pepper is soft, about 3 minutes.
Increase heat to high, add shrimp, and cook until edges turn pink, about 1 minute. Flip shrimp, ad sherry, and simmer until shrimp are just cooked through, about 1 minute. Transfer shrimp to serving platter.
Add minced garlic, parsley, butter, and lemon juice to skillet and simmer until thickened, about 1 minute. Adjust seasonings, pour over shrimp, and scatter browned garlic chips on top. Serve with lemon wedges.