What made Loki nervous was opportunity to turn into him. Associating with those who could forgive him was a dangerous thing to tempt behaviors that he was trying to escape. Given where they were and all Loki could gain here, there wasn't much to worry on, right?
"Only in that I feel as thought I've adopted an infant." Considering America put it in perspective that "friends" didn't kick each other out, and by which Tommy had given him responsibility of not letting ties dissipate. Which would make sense. Stick to whom and what you know.
Loki just didn't like the possibility of being blamed for something he didn't necessarily want to assume responsibility for.
"N--Yes, actually. There should be two boxes by the cereal. Cabinet above the sink." He'd kept the place stocked well with food as he usually had the metabolism of an Asgardian God. And really did enjoy poptarts himself. Food sounded like a good idea right now. "Will you toss me a pack?"
He was genuinely surprised that Tommy had put out the cigarette when he asked. Maybe Chavez was right. This place was weird, he..sort of knew Loki, and who really ever wanted to be alone in the unfamiliar?