bmi regional provides light refreshments on its scheduled services that are included in the fare. However, on this flight the airline is the carrier for a tour operator so it will depend on what that tour operator has decided.
Bristol Airport has a number of eateries that can be seen at the below link.
Bristol Airport Shops and Places to Eat & Drink | Bristol Airport
There is also an Aspire lounge and an Aspire Plus lounge that can be accessed on payment. The latter provides hot breakfasts at the relevant time of the day. Details are on the BRS website.
The airport can become extremely busy early in the mornings even on Saturdays when around 25 aircraft depart between 0530 and 0730. The bmir Verona is due out at 0645 so you might expect to find the place quite crowded.