Share price falls 27% after company details 64% drop in profit.

Net income climbs 29% in first quarter.

Market share gain comes in breakfast food.

Strengthening communication has helped Flowers establish credibility.

Transition into new facilities, higher input costs weigh on profitability.

Company says challenges isolated to the second quarter.

Comparable-store sales for the chain increase 10% in the first quarter.

US delivery same-store sales fall 11% amid driver shortage.

Net income drops 28% amid commodity, labor inflation in first quarter.

Sales also climb in quarter.