In a medium bowl, whisk together flour, lemon pepper, salt, and zest of 1 lemon.
Toss shrimp in the flour mixture until fully coated.
Slice remaining lemon into thin rounds.
In a large ovenproof skillet over medium-high heat, heat oil.
Add shrimp in a single layer and cook until golden on bottom, about 2 minutes, then flip.
Mix the water and all purpose seasoning to make a simple stock
To skillet, add stock, butter, garlic, and lemon slices and cook until shrimp is cooked through and sauce has reduced slightly, 3 minutes.
Spoon sauce on top of shrimp and garnish with parsley.