Crisps and dips - lidl do a gluten free version of pringles
Veg Crudités
Seabrook crisps are all gluten free
Flavoured Chicken skewers
Buy chipolata sausages (most supermarker good sausage ranges are now gluten free) and cook them and leave to cool
Fritata - morrions do a ready made one that's gluten free if you don't want to cook it yourself
Olives, stuffed mini peppees, sundried tomatoes
Potato wedges
Cheese/ onion/ pineapple sticks
Croutons/ crostini - cut Warburton gluten free tiger bread into chunks/ sticks and drizzle with oil herbs salt and garlic. Bake in the oven or cook in the air fryer until golden.
More Warburton tiger bread for sandwiches
Salami
Cheese
Gluten free crackers and oatcakes
Grapes
Gluten free chutneys and piccalilli
Gherkins
Salad
Quinoa salad
M&S do gluten free party bits like spring rolls, garlic bread, tempura chicken
I've made my own gluten free scotch eggs, sausage rolls and cheese straws in the past but that depends on what time you have.
For desert I would do a cheesecake or bannoffee using gluten free biscuits for the base.