Bring broth to a boil over medium-high heat then stir in grits. Return to boil, then reduce heat to a low simmer. Stirring occasionally, cook until it's reached your ideal thickness, about 5-7 minutes.
Stir in butter, cheese, and seasonings. Cover and set aside.
Cook bacon until crisp, remove from pan.
Cook shrimp in the same pan the bacon was in over medium-high heat until the shrimp is almost pink, about 3 minutes.
Stir in garlic, lemon juice, and Worcestershire sauce and cook until shrimp is pink, another minute or two.
Stir in bacon until evenly mixed.
Divide grits into 4 shallow bowls and serve with shrimp mix on top, sprinkled with green onions.