Put the flour on a plate and season with a healthy amount of salt and pepper; mix with a fork to combine evenly. Dredge the shrimp in the seasoned flour to coat all sides.
Heat the butter and oil in a heavy bottomed pan over medium heat until butter stops foaming and just starts to turn a light brown. Add the shrimp, and give it a toss, saute for 5 minutes until the shrimp is firm and there is a crispy coating on the outside. Remove the shrimp to a side plate and cover to keep warm.
Put the pan back on the heat and add the garlic and shallots. Cook and stir for 1 minute until soft. Add the lemon juice and chicken broth, give it a stir and let it cook down for 1 minute to thicken slightly. Put the shrimp back in the pan and coat in the lemon sauce. Season with salt and pepper and garnish with chopped parsley before serving.
Recipe courtesy of Tyler Florence