Not many people know, but Percy is actually an amazing cook. His mother learned him how to cook at a young age, because she was of the opinion that everybody should be able to make themselves food (and come on, she was right).
Still, most people don't really believe in Percy's abilities as a cook. So when Percy announced that he was going to be the one to cook the food for the next reunion of the seven, his friends already had the number of the nearby pizza parlour ready. It also wasn't just the seven coming together this time. Nico, Will, Reyna, Grover, Tyson and Calypso had been invited as well, and Reyna had taken her sister Hylla with her, just because. The seven needed to make a good first impression on their monthly get-togethers. They didn't want the kitchen to transform into what looked like a warzone (Like the time Leo and Jason had cooked together. The kitchen at Camp Half-Blood had smelled like smoke and Blitzen for months. Also, Jason and Leo had been assigned stable-duty for two months. It was not their proudest accomplishment).
Percy had everything worked out: he had already prepared the chicken and the vegetables (his friends had prepared the fire extinguisher in the meantime). He was now baking bread, with the vegetables cooking on the stove. He knew how to multitask in the kitchen. He was already making chocolate-mousse for desert and had almost finished the first course (Tomato Soup, with an extra portion without meat for piper and Grover). After 45 minutes, everything was done and he brought the first course into the room. At first, everyone was a little weary about eating it. Annabeth bravely took bite. She was surprised to find out it was that tasty, and quickly everyone was eating the soup. It was gone swiftly, so Percy brought in the second course: the Chicken and vegetables (he had also made Tofu for the vegetarians). All the friends got more and more happy and chatty. Percy giggled. Good food did something to you. When he brought in the third course, everyone was laughing about some joke Reyna made. That Reyna was joking around, was a rarity, and everyone got extra happy because of it. The mousse tasted great, and Frank was enjoying his fruit salad (he was lactose intolerant and all). At the end of the night, everyone went home happily and with a full feeling in their stomachs. Annabeth was the only one to not go home - she stayed at Percy's house.
The next morning, Percy made Annabeth and his parents and sister breakfast, while people were already planning their next get-together. To would be next month, but it wasn't sure who would cook yet. Leo and Jason had volunteered, but the rest had politely put them down. They weren't sure Camp Half-Blood could get through another exploding kitchen.