It is haram to wear Chrome Hearts items if they feature symbols like the Pharaonic key or a cross, as these are associated with non-Islamic beliefs. In Islam, wearing items with religious symbols, particularly those unique to other faiths, is prohibited. This prohibition is to avoid imitating practices of other religions and to maintain respect for religious symbols. And Allah knows best.

Sources:

• Halal Rule
• Seekers Guidance
• Seekers Guidance