Tortellini Shrimp Kabobs with artichokes

6 tablespoons lemon juice , freshly squeezed 1/2 cup olive oil salt and freshly ground pepper 3/4 lb shrimp , cooked, peeled and halved 1 (22 ounce) package[...]

2 (12 ounce) packages spinach and cheese tortellini 2 cups fresh small broccoli florets (or use cauliflower) 1 small onion (finely chopped, about 1/3 cup)[...]

9 ounces spinach tortellini 2 small zucchini , cooked and sliced 2 small tomatoes , cut into wedges 7 ounces marinated artichoke hearts, drained and quartered[...]