Wash, drain and prepare all ingredients; fully cook any meat or seafood before assembly and chill it safely.
Arrange cubed provolone and quartered artichoke hearts alternately on 16 short food-safe cocktail picks. Cut large pieces evenly so each pick can be eaten in one or two bites.
Prepare pitted green olives. Add these between the main items where practical, or scatter finely chopped herbs over the tray.
Whisk olive oil and lemon juice and brush or drizzle lightly over the skewers just before serving.