Steak with Queso Shrimp Sauce

I've made this recipe twice and I think the first time was better than the second.  It's still really tasty, I just remember it being spicier last time.  I traded the diced onion and tomatoes for a can of Rotel, but that might have been a mistake.  I'll have to play around with it more.

Steak with Queso Shrimp Sauce
from Low Carb Friends

1 1/2 lbs trimmed sirloin steaks
1/2 tsp salt
1/4 tsp pepper
1/4 tsp garlic powder
2 tbsp olive oil
1 zucchini, diced
1/2 cup diced onion
1/2 cup diced tomato
6 oz shrimp, peeled and halved
3 tbsp chicken broth
3 tbsp heavy cream
2 oz monterray jack cheese

Mix salt, pepper and garlic powder together and sprinkle on both sides of the steaks.  Let sit at room temperature for 5 minutes.  Heat 1 tbsp of oil in a large skillet over medium-high heat and tilt skillet to coat.  Sear steaks for 5 minutes a side until mostly cooked to your desired doneness.  Remove and keep warm.  Heat remaining oil and add zucchini, onions and tomatoes.  Saute for about 5 minutes until veggies color slightly.  Add shrimp and cook until it is pink and opaque.  Add broth and cream to the pan and bring to a boil.  Turn off the heat, add cheese and stir.  Spoon the sauce over the steaks and serve.