Wash your shrimp, then remove the shell and devein them.
Season your shrimp with 1/4 tsp salt, onion powder, garlic powder,1/2 tsp curry powder, ginger powder and allspice. Marinate for one hour.
Heat your pan on medium low heat and 2 tbsp of oil and your remaining curry powder. Cook 'burn' the curry for 30 seconds.
Add in your scallion, thyme, potato, bell pepper and all purpose seasoning. Mix well.
Add in your coconut milk, scotch bonnet pepper, salt, and black pepper. Simmer for 10 minutes.
Add in your shrimp, cover and cook for 2-3 minutes. Then flip and cook for another 2 minutes. Mix well to ensure that the excess seasoning on the shrimp is added in the sauce.
Serve hot over rice.